Exponential Technology Report 2026: Space and Orbital Infrastructure

S.1Abstract

S.2Key messages

Six readings that frame the space baseline, and the eight questions this edition answers, each with its status and source.

1. The US network catalogued 34,054 on 4 August 2026. ESA counts about 40,000 tracked at the end of 2024. The bases differ.⁴¹

   How many objects are in orbit?Reported

2. 17,099 on 26 October 2026 in a public tracker, about two thirds from one constellation.³

   How many satellites are active?Reported

3. ESA estimates over 50,000 objects above 10 cm and over 1.2 million above 1 cm.¹

   How much debris is there?Reported

4. It raised drag on thousands of satellites and put one NASA mission in safe mode.⁷

   What did the 2024 storm do?Reported

5. A preprint estimates 5.5 days if maneuvering stopped, as of June 2025.⁹

   How fast could a collision cascade start?Reported

6. GPS: a study estimates USD 1.4 trillion of US private-sector benefit from 1984 to 2017.¹⁵

   What on the ground depends on orbit?Reported

7. A five-year disposal rule in the US from 2022; the EU Space Act proposal was under review in 2025.¹¹¹⁴

   What do the rules require?Reported

8. Loss of control or navigation in a crowded orbit during a severe storm. SCN-XT18-STM-01

   What will 2027 test first?Expert input

S.3Headline finding

ReportedEQL 4NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-ORB-001

The US Space Surveillance Network catalogued 34,054 objects in Earth orbit on 4 August 2026.

The catalogue is the shared base for traffic safety, and it is incomplete by design: it holds objects large enough to track. NASA states that millimeter-sized debris numbers about 100 million and is estimated statistically⁵. ESA counts about 40,000 tracked objects and estimates more than 1.2 million larger than 1 cm¹. The counts use different bases and are not reconciled in this edition.

S.4At a glance

S.5What each steward reads in it

S.6What this edition is, and is not

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

1. 4NASA Orbital Debris Program Office (ed.), Orbital Debris Quarterly News, Volume 30, Issue 3, September 2026 (satellite box score as of 4 August 2026; launch table May to July 2026). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
2. 3McDowell, J., Active satellites statistics page (state at 2026 Oct 26; independent expert tracker, not an official catalogue; headline 17,099, category total 17,098). Jonathan McDowell, Cambridge MA. Observation year 2026. Accessed 2026-11-03.back
3. 2ESA (ed.), ESA Space Environment Report 2026 (summary page dated 14 September 2026; data through the end of 2025; the full report PDF was not opened). European Space Agency, Paris. Observation year 2025. Accessed 2026-11-03.back
4. 1ESA (ed.), ESA Space Environment Report 2025 (summary page dated 1 April 2025; data through the end of 2024). European Space Agency, Paris. Observation year 2024. Accessed 2026-11-03.back
5. 7NASA (ed.), What NASA is learning from the biggest geomagnetic storm in 20 years (article dated 9 May 2025; page updated 25 September 2026). National Aeronautics and Space Administration, Washington. Observation year 2024. Accessed 2026-11-03.back
6. 9Thiele, S., Heiland, S.R., Boley, A.C. and Lawler, S.M., An Orbital House of Cards: Frequent Satellite Close Conjunctions, arXiv:2512.09643, submitted 10 December 2025, version 3 of 29 June 2026 (abstract page read; preprint, peer review not located; the abstract of this version gives 5.5 days and 164 days). arXiv, Ithaca. Observation year 2025. Accessed 2026-11-03.back
7. 15NIST (ed.), Economic Benefits of the Global Positioning System to the US Private Sector (news page dated 2 October 2019, updated 3 February 2025; study by RTI International sponsored by NIST; about USD 1.4 trillion in 2017 dollars, 1984 to 2017). National Institute of Standards and Technology, Gaithersburg. Observation year 2019. Accessed 2026-11-03.back
8. 20UK Government (ed.), Russia behind cyber attack with Europe-wide impact an hour before Ukraine invasion (news story of 10 May 2022; company statements are quoted by the government and are weak evidence). Foreign, Commonwealth and Development Office, London. Observation year 2022. Accessed 2026-11-03.back
9. 11FCC (ed.), Second Report and Order, FCC 22-74, Mitigation of Orbital Debris in the New Space Age, IB Docket Nos. 22-271 and 18-313, adopted 29 September 2022, released 30 September 2022. Federal Communications Commission, Washington. Observation year 2022. Accessed 2026-11-03.back
10. 14General Secretariat of the Council (ed.), Note 15830/25, Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), progress report for the Competitiveness Council of 8 and 9 December 2025, interinstitutional file 2025/0335 (COD), 26 November 2025. Council of the European Union, Brussels. Observation year 2025. Accessed 2026-11-03.back
11. 10Ferreira, J.P., Huang, Z., Nomura, K. and Wang, J., Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega-Constellations, Geophysical Research Letters 51, 2024, DOI 10.1029/2024GL109280 (full text read; modelling study). American Geophysical Union, Washington. Observation year 2022. Accessed 2026-11-03. doi:10.1029/2024GL109280back
12. 5NASA Orbital Debris Program Office (ed.), Orbital debris frequently asked questions (more than 34,000 objects catalogued as of August 2026; about 100 million millimeter-sized pieces; 41 ISS avoidance maneuvers since 1999). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
13. 16POST-CLOSE, context only: NASA (ed.), Artemis Accords (web page; 78 signatories; most recent signing on 28 October 2026). National Aeronautics and Space Administration, Washington. Observation year 2026. Accessed 2026-11-03.back

1.1The questions this part answers

Key questions

• Where is space risk concentrated?
• Which couplings carry space shocks into other systems?
• Which space capabilities hold under compound stress?
• What must 2027 evidence measure first?

In this part

• Narrative
• Headline finding
• Lead figure
• Five footprint and governance chapters
• Twelve-domain reading
• Sector screens
• Dependency matrix
• Risk objects
• Capability ladder
• Scenario
• Three lenses
• Portfolio

1.2The argument

1.3Twenty couplings between five systems

The space-centred matrix types the twenty couplings between the five core systems, read for their space content. Strengths are Nexus estimates (ESTIMATED) from the cited evidence and analogue events; they set the graph that 2027 evidence will test.

Transmission paths

1. 01

   SPW → INF

   A severe storm raises drag and strains maneuvering across crowded orbits.

   Inferred 2024 storm and CRASH Clock⁷⁹

2. 02

   INF → DAT

   Orbit carries navigation and communications that other systems use.

   Reported GPS benefit study¹⁵

3. 03

   SPW → FOO

   A storm degraded GPS-guided farming in 2024.

   Reported NASA article⁷

4. 04

   DAT → INF

   A ground-segment cyberattack disabled terminals in 2022.

   Reported UK attribution²⁰

5. 05

   GOV → INF

   Disposal and licensing rules set the debris trajectory.

   Reported FCC and EU¹¹¹⁴

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

1. 4NASA Orbital Debris Program Office (ed.), Orbital Debris Quarterly News, Volume 30, Issue 3, September 2026 (satellite box score as of 4 August 2026; launch table May to July 2026). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
2. 3McDowell, J., Active satellites statistics page (state at 2026 Oct 26; independent expert tracker, not an official catalogue; headline 17,099, category total 17,098). Jonathan McDowell, Cambridge MA. Observation year 2026. Accessed 2026-11-03.back
3. 15NIST (ed.), Economic Benefits of the Global Positioning System to the US Private Sector (news page dated 2 October 2019, updated 3 February 2025; study by RTI International sponsored by NIST; about USD 1.4 trillion in 2017 dollars, 1984 to 2017). National Institute of Standards and Technology, Gaithersburg. Observation year 2019. Accessed 2026-11-03.back
4. 2ESA (ed.), ESA Space Environment Report 2026 (summary page dated 14 September 2026; data through the end of 2025; the full report PDF was not opened). European Space Agency, Paris. Observation year 2025. Accessed 2026-11-03.back
5. 1ESA (ed.), ESA Space Environment Report 2025 (summary page dated 1 April 2025; data through the end of 2024). European Space Agency, Paris. Observation year 2024. Accessed 2026-11-03.back
6. 7NASA (ed.), What NASA is learning from the biggest geomagnetic storm in 20 years (article dated 9 May 2025; page updated 25 September 2026). National Aeronautics and Space Administration, Washington. Observation year 2024. Accessed 2026-11-03.back
7. 9Thiele, S., Heiland, S.R., Boley, A.C. and Lawler, S.M., An Orbital House of Cards: Frequent Satellite Close Conjunctions, arXiv:2512.09643, submitted 10 December 2025, version 3 of 29 June 2026 (abstract page read; preprint, peer review not located; the abstract of this version gives 5.5 days and 164 days). arXiv, Ithaca. Observation year 2025. Accessed 2026-11-03.back
8. 20UK Government (ed.), Russia behind cyber attack with Europe-wide impact an hour before Ukraine invasion (news story of 10 May 2022; company statements are quoted by the government and are weak evidence). Foreign, Commonwealth and Development Office, London. Observation year 2022. Accessed 2026-11-03.back
9. 11FCC (ed.), Second Report and Order, FCC 22-74, Mitigation of Orbital Debris in the New Space Age, IB Docket Nos. 22-271 and 18-313, adopted 29 September 2022, released 30 September 2022. Federal Communications Commission, Washington. Observation year 2022. Accessed 2026-11-03.back
10. 14General Secretariat of the Council (ed.), Note 15830/25, Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), progress report for the Competitiveness Council of 8 and 9 December 2025, interinstitutional file 2025/0335 (COD), 26 November 2025. Council of the European Union, Brussels. Observation year 2025. Accessed 2026-11-03.back
11. 10Ferreira, J.P., Huang, Z., Nomura, K. and Wang, J., Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega-Constellations, Geophysical Research Letters 51, 2024, DOI 10.1029/2024GL109280 (full text read; modelling study). American Geophysical Union, Washington. Observation year 2022. Accessed 2026-11-03. doi:10.1029/2024GL109280back

2.1Headline finding

ReportedEQL 4NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-ORB-001

The US Space Surveillance Network catalogued 34,054 objects in Earth orbit on 4 August 2026.

Implication

The catalogue is the shared base for traffic safety, and it is incomplete by design: it holds objects large enough to track. NASA states that millimeter-sized debris numbers about 100 million and is estimated statistically⁵. ESA counts about 40,000 tracked objects and estimates more than 1.2 million larger than 1 cm¹. The counts use different bases and are not reconciled in this edition.

What would move it

A common basis for catalogues, the next quarterly issue and the next ESA report would each move this finding.

2.2ORB

1. ReportedEQL 4NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-ORB-001

   The US Space Surveillance Network catalogued 34,054 objects in Earth orbit on 4 August 2026: 19,154 spacecraft, active and defunct, and 14,900 rocket bodies and other debris.⁴⁵

2. ReportedEQL 3NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-ORB-002

   A public tracker counted 17,099 active satellites on 26 October 2026, of which 11,148 were active satellites of one commercial constellation, about 65% (derivation (1)).³

3. ReportedEQL 3NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-ORB-003

   ESA estimates more than 50,000 debris objects larger than 10 cm and more than 1.2 million larger than 1 cm at the end of 2024, and counts about 40,000 tracked objects.¹

4. ReportedEQL 4NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-ORB-004

   In 2025 there were more than 300 launches and over 4,000 new payloads, about ten a day, and more than three intact satellites or rocket bodies reentered each day on average.²¹

2.3SPW

1. ReportedEQL 4NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-SPW-005

   The May 2024 geomagnetic storm, the first G5 storm in over two decades, raised drag on thousands of satellites, and ICESat-2 lost altitude and entered safe mode; storm size and duration were poorly forecast even one day ahead.⁷⁶⁸

2. ReportedEQL 2NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-SPW-006

   A preprint estimates that the time to a possible catastrophic collision, if satellites stopped maneuvering, was 5.5 days in June 2025, against 164 days in 2018.⁹

2.4NAV

1. ReportedEQL 3NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-NAV-007

   A 2019 study sponsored by NIST estimates that GPS generated about USD 1.4 trillion of US private-sector benefit from 1984 to 2017, and that an outage would cost about USD 1 billion a day, up to 50% more in a multi-week planting-season outage.¹⁵

2.5CYB

1. ReportedEQL 3NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-CYB-008

   A cyberattack on 24 February 2022 disrupted a commercial satellite network in Ukraine and wind farms in central Europe; the company said tens of thousands of terminals were damaged, and the UK attributed the attack to Russia on 10 May 2022.²⁰¹⁹³⁶

2.6ENV

1. ReportedEQL 3NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-ENV-009

   A 2024 modelling study estimates that satellites reentering in 2022 injected about 17 metric tons of aluminum oxides into the mesosphere, raising aluminum 29.5% above the natural level, and that constellation scenarios exceed 360 metric tons a year.¹⁰

2.7Governance

1. ReportedEQL 4NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-GOV-010

   The European Commission proposed the EU Space Act in June 2025; by November 2025 every Member State held a scrutiny reservation and delegations called the text too prescriptive and not proportionate.¹⁴²⁴

2. ReportedEQL 4NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-GOV-011

   The FCC adopted a five-year post-mission disposal rule for low Earth orbit space stations on 29 September 2022, shortening a 25-year benchmark, and ESA reports about 80% of low-orbit rocket bodies meeting its own five-year standard.¹¹¹

2.8Systemic

1. Expert inputEQL 2NRF-XTECH-SPACE-GLOBAL-2026-BASELINE-SYS-012

   The leading compound pathway for 2027 testing is loss of satellite control or navigation during a severe storm in a crowded low orbit, while each dependency is measured only on its own. § scenario

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

1. 4NASA Orbital Debris Program Office (ed.), Orbital Debris Quarterly News, Volume 30, Issue 3, September 2026 (satellite box score as of 4 August 2026; launch table May to July 2026). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
2. 5NASA Orbital Debris Program Office (ed.), Orbital debris frequently asked questions (more than 34,000 objects catalogued as of August 2026; about 100 million millimeter-sized pieces; 41 ISS avoidance maneuvers since 1999). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
3. 1ESA (ed.), ESA Space Environment Report 2025 (summary page dated 1 April 2025; data through the end of 2024). European Space Agency, Paris. Observation year 2024. Accessed 2026-11-03.back
4. 3McDowell, J., Active satellites statistics page (state at 2026 Oct 26; independent expert tracker, not an official catalogue; headline 17,099, category total 17,098). Jonathan McDowell, Cambridge MA. Observation year 2026. Accessed 2026-11-03.back
5. 2ESA (ed.), ESA Space Environment Report 2026 (summary page dated 14 September 2026; data through the end of 2025; the full report PDF was not opened). European Space Agency, Paris. Observation year 2025. Accessed 2026-11-03.back
6. 7NASA (ed.), What NASA is learning from the biggest geomagnetic storm in 20 years (article dated 9 May 2025; page updated 25 September 2026). National Aeronautics and Space Administration, Washington. Observation year 2024. Accessed 2026-11-03.back
7. 6Parker, W.E. and Linares, R., Satellite Drag Analysis During the May 2024 Gannon Geomagnetic Storm, arXiv:2406.08617, 2024 (abstract page read; preprint). arXiv, Ithaca. Observation year 2024. Accessed 2026-11-03.back
8. 8NOAA Space Weather Prediction Center (ed.), NOAA Space Weather Scales explanation page (G5 extreme geomagnetic storm). National Oceanic and Atmospheric Administration, Boulder. Observation year 2026. Accessed 2026-11-03.back
9. 9Thiele, S., Heiland, S.R., Boley, A.C. and Lawler, S.M., An Orbital House of Cards: Frequent Satellite Close Conjunctions, arXiv:2512.09643, submitted 10 December 2025, version 3 of 29 June 2026 (abstract page read; preprint, peer review not located; the abstract of this version gives 5.5 days and 164 days). arXiv, Ithaca. Observation year 2025. Accessed 2026-11-03.back
10. 15NIST (ed.), Economic Benefits of the Global Positioning System to the US Private Sector (news page dated 2 October 2019, updated 3 February 2025; study by RTI International sponsored by NIST; about USD 1.4 trillion in 2017 dollars, 1984 to 2017). National Institute of Standards and Technology, Gaithersburg. Observation year 2019. Accessed 2026-11-03.back
11. 20UK Government (ed.), Russia behind cyber attack with Europe-wide impact an hour before Ukraine invasion (news story of 10 May 2022; company statements are quoted by the government and are weak evidence). Foreign, Commonwealth and Development Office, London. Observation year 2022. Accessed 2026-11-03.back
12. 19CISA and FBI (eds.), Strengthening Cybersecurity of SATCOM Network Providers and Customers, Advisory AA22-076A, published 17 March 2022, revised 10 May 2022. Cybersecurity and Infrastructure Security Agency, Arlington. Observation year 2022. Accessed 2026-11-03.back
13. 36UNVERIFIED, not opened: Council of the European Union (ed.), Russian cyber operations against Ukraine: declaration by the High Representative on behalf of the EU, 10 May 2022, cited from memory; the page returned an access error. Council of the European Union, Brussels. Observation year 2022. Accessed 2026-11-03.back
14. 10Ferreira, J.P., Huang, Z., Nomura, K. and Wang, J., Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega-Constellations, Geophysical Research Letters 51, 2024, DOI 10.1029/2024GL109280 (full text read; modelling study). American Geophysical Union, Washington. Observation year 2022. Accessed 2026-11-03. doi:10.1029/2024GL109280back
15. 14General Secretariat of the Council (ed.), Note 15830/25, Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), progress report for the Competitiveness Council of 8 and 9 December 2025, interinstitutional file 2025/0335 (COD), 26 November 2025. Council of the European Union, Brussels. Observation year 2025. Accessed 2026-11-03.back
16. 24UNVERIFIED, not opened: European Commission (ed.), Proposal for a Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), COM(2025) 335, published 25 June 2025, taken from search-result summaries; the Council note gives 26 June 2025 as the transmission date. European Commission, Brussels. Observation year 2025. Accessed 2026-11-03.back
17. 11FCC (ed.), Second Report and Order, FCC 22-74, Mitigation of Orbital Debris in the New Space Age, IB Docket Nos. 22-271 and 18-313, adopted 29 September 2022, released 30 September 2022. Federal Communications Commission, Washington. Observation year 2022. Accessed 2026-11-03.back

3.1Where each system stood at evidence close

3.2Domain posture

Each of the twelve coupled domains is read through space, in words, not scored. The coupling column names the dependency that carries space risk into each domain.

3.3Sector screens

All sixteen sectors are screened for their dependence on space, on the same grammar as every national edition. The evidence column describes coverage of the baseline evidence, not the performance of the sector.

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

1. 4NASA Orbital Debris Program Office (ed.), Orbital Debris Quarterly News, Volume 30, Issue 3, September 2026 (satellite box score as of 4 August 2026; launch table May to July 2026). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
2. 3McDowell, J., Active satellites statistics page (state at 2026 Oct 26; independent expert tracker, not an official catalogue; headline 17,099, category total 17,098). Jonathan McDowell, Cambridge MA. Observation year 2026. Accessed 2026-11-03.back
3. 2ESA (ed.), ESA Space Environment Report 2026 (summary page dated 14 September 2026; data through the end of 2025; the full report PDF was not opened). European Space Agency, Paris. Observation year 2025. Accessed 2026-11-03.back
4. 9Thiele, S., Heiland, S.R., Boley, A.C. and Lawler, S.M., An Orbital House of Cards: Frequent Satellite Close Conjunctions, arXiv:2512.09643, submitted 10 December 2025, version 3 of 29 June 2026 (abstract page read; preprint, peer review not located; the abstract of this version gives 5.5 days and 164 days). arXiv, Ithaca. Observation year 2025. Accessed 2026-11-03.back
5. 10Ferreira, J.P., Huang, Z., Nomura, K. and Wang, J., Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega-Constellations, Geophysical Research Letters 51, 2024, DOI 10.1029/2024GL109280 (full text read; modelling study). American Geophysical Union, Washington. Observation year 2022. Accessed 2026-11-03. doi:10.1029/2024GL109280back
6. 15NIST (ed.), Economic Benefits of the Global Positioning System to the US Private Sector (news page dated 2 October 2019, updated 3 February 2025; study by RTI International sponsored by NIST; about USD 1.4 trillion in 2017 dollars, 1984 to 2017). National Institute of Standards and Technology, Gaithersburg. Observation year 2019. Accessed 2026-11-03.back
7. 7NASA (ed.), What NASA is learning from the biggest geomagnetic storm in 20 years (article dated 9 May 2025; page updated 25 September 2026). National Aeronautics and Space Administration, Washington. Observation year 2024. Accessed 2026-11-03.back
8. 23UNVERIFIED, not opened: Space Foundation (ed.), The Space Report 2025 Q2 (global space economy USD 613 billion in 2024, about 7.8% growth, about 78% commercial), taken from search-result summaries; the page returned an access error. Space Foundation, Colorado Springs. Observation year 2024. Accessed 2026-11-03.back
9. 20UK Government (ed.), Russia behind cyber attack with Europe-wide impact an hour before Ukraine invasion (news story of 10 May 2022; company statements are quoted by the government and are weak evidence). Foreign, Commonwealth and Development Office, London. Observation year 2022. Accessed 2026-11-03.back
10. 18ITU (ed.), ITU-R Space Services Department (web page; Radio Regulations procedures, Master International Frequency Register, space sustainability support). International Telecommunication Union, Geneva. Observation year 2026. Accessed 2026-11-03.back
11. 8NOAA Space Weather Prediction Center (ed.), NOAA Space Weather Scales explanation page (G5 extreme geomagnetic storm). National Oceanic and Atmospheric Administration, Boulder. Observation year 2026. Accessed 2026-11-03.back
12. 6Parker, W.E. and Linares, R., Satellite Drag Analysis During the May 2024 Gannon Geomagnetic Storm, arXiv:2406.08617, 2024 (abstract page read; preprint). arXiv, Ithaca. Observation year 2024. Accessed 2026-11-03.back
13. 19CISA and FBI (eds.), Strengthening Cybersecurity of SATCOM Network Providers and Customers, Advisory AA22-076A, published 17 March 2022, revised 10 May 2022. Cybersecurity and Infrastructure Security Agency, Arlington. Observation year 2022. Accessed 2026-11-03.back
14. 13United Nations Office for Outer Space Affairs (ed.), Convention on International Liability for Damage Caused by Space Objects (treaty page; General Assembly resolution 2777 (XXVI) of 29 November 1971; opened for signature 29 March 1972). United Nations, Vienna. Observation year 1972. Accessed 2026-11-03.back
15. 11FCC (ed.), Second Report and Order, FCC 22-74, Mitigation of Orbital Debris in the New Space Age, IB Docket Nos. 22-271 and 18-313, adopted 29 September 2022, released 30 September 2022. Federal Communications Commission, Washington. Observation year 2022. Accessed 2026-11-03.back
16. 14General Secretariat of the Council (ed.), Note 15830/25, Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), progress report for the Competitiveness Council of 8 and 9 December 2025, interinstitutional file 2025/0335 (COD), 26 November 2025. Council of the European Union, Brussels. Observation year 2025. Accessed 2026-11-03.back
17. 27UNVERIFIED, not opened: Kessler, D.J. and Cour-Palais, B.G., Collision frequency of artificial satellites: the creation of a debris belt, Journal of Geophysical Research 83, 2637 to 2646, 1978, cited from memory. Observation year 1978. Accessed 2026-11-03.back

4.1Risk objects

Each risk is read across the chain from hazard to consequence, with its status and evidence-quality level.

1. InferredEQL 3RSK-XT18-SPW-001

   Storm exposure in crowded orbits

   Driver

   severe geomagnetic storms and poor forecast skill⁶⁸

   Exposure

   satellites in low orbit; navigation users

   Vulnerability

   many satellites maneuvering at once; limited recovery time⁹

   Capacity

   storm scales and watches⁸

   Cascade

   SPW → INF → DAT, FOO

   Horizon

   1 to 5 years

2. InferredEQL 3RSK-XT18-DEB-002

   Debris growth and collision cascade

   Driver

   launch growth and fragmentation events¹²

   Exposure

   low orbits near constellation altitudes¹

   Vulnerability

   objects too small to track⁵

   Capacity

   disposal rules and mitigation guidelines¹¹¹²

   Cascade

   INF → DAT

   Horizon

   1 to 10 years

3. InferredEQL 3RSK-XT18-NAV-003

   Navigation and timing outage

   Driver

   storm, interference or ground-segment failure⁷²⁰

   Exposure

   farming, finance, telecommunications, power timing¹⁵

   Vulnerability

   single-system dependence

   Capacity

   multiple constellations²¹; backups not documented here

   Cascade

   DAT → FIN, FOO, ENE

   Horizon

   1 to 5 years

4. InferredEQL 3RSK-XT18-GOV-004

   Fragmented rules and slow adoption

   Driver

   national rules, a draft EU act and voluntary guidelines¹¹¹⁴³³

   Exposure

   operators in several jurisdictions

   Vulnerability

   scrutiny reservations and slow agreement¹⁴

   Capacity

   treaties, ITU recording and guidelines¹³¹⁸²⁵

   Cascade

   GOV → INF

   Horizon

   1 to 10 years

4.2Capability ladder

Existence is not readiness. Each of the fifteen capability functions is placed on the ladder by the strongest public evidence for space at the global level.

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

1. 6Parker, W.E. and Linares, R., Satellite Drag Analysis During the May 2024 Gannon Geomagnetic Storm, arXiv:2406.08617, 2024 (abstract page read; preprint). arXiv, Ithaca. Observation year 2024. Accessed 2026-11-03.back
2. 8NOAA Space Weather Prediction Center (ed.), NOAA Space Weather Scales explanation page (G5 extreme geomagnetic storm). National Oceanic and Atmospheric Administration, Boulder. Observation year 2026. Accessed 2026-11-03.back
3. 9Thiele, S., Heiland, S.R., Boley, A.C. and Lawler, S.M., An Orbital House of Cards: Frequent Satellite Close Conjunctions, arXiv:2512.09643, submitted 10 December 2025, version 3 of 29 June 2026 (abstract page read; preprint, peer review not located; the abstract of this version gives 5.5 days and 164 days). arXiv, Ithaca. Observation year 2025. Accessed 2026-11-03.back
4. 1ESA (ed.), ESA Space Environment Report 2025 (summary page dated 1 April 2025; data through the end of 2024). European Space Agency, Paris. Observation year 2024. Accessed 2026-11-03.back
5. 2ESA (ed.), ESA Space Environment Report 2026 (summary page dated 14 September 2026; data through the end of 2025; the full report PDF was not opened). European Space Agency, Paris. Observation year 2025. Accessed 2026-11-03.back
6. 5NASA Orbital Debris Program Office (ed.), Orbital debris frequently asked questions (more than 34,000 objects catalogued as of August 2026; about 100 million millimeter-sized pieces; 41 ISS avoidance maneuvers since 1999). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
7. 11FCC (ed.), Second Report and Order, FCC 22-74, Mitigation of Orbital Debris in the New Space Age, IB Docket Nos. 22-271 and 18-313, adopted 29 September 2022, released 30 September 2022. Federal Communications Commission, Washington. Observation year 2022. Accessed 2026-11-03.back
8. 12ESA (ed.), ESA Zero Debris approach (web page, undated; target 2030). European Space Agency, Paris. Observation year 2023. Accessed 2026-11-03.back
9. 7NASA (ed.), What NASA is learning from the biggest geomagnetic storm in 20 years (article dated 9 May 2025; page updated 25 September 2026). National Aeronautics and Space Administration, Washington. Observation year 2024. Accessed 2026-11-03.back
10. 20UK Government (ed.), Russia behind cyber attack with Europe-wide impact an hour before Ukraine invasion (news story of 10 May 2022; company statements are quoted by the government and are weak evidence). Foreign, Commonwealth and Development Office, London. Observation year 2022. Accessed 2026-11-03.back
11. 15NIST (ed.), Economic Benefits of the Global Positioning System to the US Private Sector (news page dated 2 October 2019, updated 3 February 2025; study by RTI International sponsored by NIST; about USD 1.4 trillion in 2017 dollars, 1984 to 2017). National Institute of Standards and Technology, Gaithersburg. Observation year 2019. Accessed 2026-11-03.back
12. 21EUSPA (ed.), Galileo (web page last modified 25 September 2026; no satellite count on the page). European Union Agency for the Space Programme, Prague. Observation year 2026. Accessed 2026-11-03.back
13. 14General Secretariat of the Council (ed.), Note 15830/25, Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), progress report for the Competitiveness Council of 8 and 9 December 2025, interinstitutional file 2025/0335 (COD), 26 November 2025. Council of the European Union, Brussels. Observation year 2025. Accessed 2026-11-03.back
14. 33UNVERIFIED, not opened: United Nations Committee on the Peaceful Uses of Outer Space (ed.), Guidelines for the Long-term Sustainability of Outer Space Activities, 2019, cited from memory. United Nations, Vienna. Observation year 2019. Accessed 2026-11-03.back
15. 13United Nations Office for Outer Space Affairs (ed.), Convention on International Liability for Damage Caused by Space Objects (treaty page; General Assembly resolution 2777 (XXVI) of 29 November 1971; opened for signature 29 March 1972). United Nations, Vienna. Observation year 1972. Accessed 2026-11-03.back
16. 18ITU (ed.), ITU-R Space Services Department (web page; Radio Regulations procedures, Master International Frequency Register, space sustainability support). International Telecommunication Union, Geneva. Observation year 2026. Accessed 2026-11-03.back
17. 25UNVERIFIED, not opened: United Nations (ed.), Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies, 1967, cited from memory. United Nations, New York. Observation year 1967. Accessed 2026-11-03.back
18. 34UNVERIFIED, not opened: Inter-Agency Space Debris Coordination Committee (ed.), IADC Space Debris Mitigation Guidelines, cited from memory; the page returned an access error. IADC. Observation year 2025. Accessed 2026-11-03.back
19. 4NASA Orbital Debris Program Office (ed.), Orbital Debris Quarterly News, Volume 30, Issue 3, September 2026 (satellite box score as of 4 August 2026; launch table May to July 2026). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
20. 10Ferreira, J.P., Huang, Z., Nomura, K. and Wang, J., Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega-Constellations, Geophysical Research Letters 51, 2024, DOI 10.1029/2024GL109280 (full text read; modelling study). American Geophysical Union, Washington. Observation year 2022. Accessed 2026-11-03. doi:10.1029/2024GL109280back
21. 27UNVERIFIED, not opened: Kessler, D.J. and Cour-Palais, B.G., Collision frequency of artificial satellites: the creation of a debris belt, Journal of Geophysical Research 83, 2637 to 2646, 1978, cited from memory. Observation year 1978. Accessed 2026-11-03.back
22. 28UNVERIFIED, not opened: Boley, A.C. and Byers, M., Satellite mega-constellations create risks in Low Earth Orbit, the atmosphere and on Earth, Scientific Reports 11, 10642, 2021, cited from memory. Observation year 2021. Accessed 2026-11-03.back

5.1Assumptions

Scenario SCN-XT18-STM-01: what is assumed, and what is held constant.

Baseline

the 2026 reference state in this edition

Drivers

a storm of the 2024 class, or larger, arrives while low orbits hold more satellites than in 2024

Analogues

the May 2024 storm and the CRASH Clock estimate⁷⁹

Interventions

none modelled: the specification describes the unmitigated case

Run state

narrative specification; quantified run scheduled for 2027

5.2The cascade, step by step

1. 1

   SPW → INF

   storm heating raises drag on thousands of satellites

   2024

2. 2

   INF → INF

   many satellites maneuver at once and some lose control

   2025

3. 3

   INF → DAT

   navigation and communications degrade for hours to days

   2024

4. 4

   DAT → FOO

   GPS-guided farming and logistics stall

   2024

5. 5

   SPW → ENE

   power lines and transformers are stressed on the ground

   2024

6. 6

   GOV → INF

   licensing and disposal rules are tested against the event

   2022

5.3The scenario as a table of steps

How the shock in scenario SCN-XT18-STM-01 would travel through Space and Orbital Infrastructure’s coupled systems, step by step, under the assumptions the edition states.

A teaching model of a conditional scenario under the edition’s stated assumptions: not a forecast, not a prediction and not a warning. Sources: Space and Orbital Infrastructure 2026, scenario SCN-XT18-STM-01 (2026); Space and Orbital Infrastructure 2026, references (NR-CIT-1) (2026).

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

1. 7NASA (ed.), What NASA is learning from the biggest geomagnetic storm in 20 years (article dated 9 May 2025; page updated 25 September 2026). National Aeronautics and Space Administration, Washington. Observation year 2024. Accessed 2026-11-03.back
2. 9Thiele, S., Heiland, S.R., Boley, A.C. and Lawler, S.M., An Orbital House of Cards: Frequent Satellite Close Conjunctions, arXiv:2512.09643, submitted 10 December 2025, version 3 of 29 June 2026 (abstract page read; preprint, peer review not located; the abstract of this version gives 5.5 days and 164 days). arXiv, Ithaca. Observation year 2025. Accessed 2026-11-03.back

6.1The other desks’ editions of this subject

Federation: each desk writes its own edition for the subjects in its remit. Until a desk releases, its edition shows its frame and the reading this edition printed for it.

6.2Three lenses

One edition, read by each steward. The lens of this site comes first.

6.3Standards, Academy and steward contributions

How the Nexus Standards drafts, the Risk Academy and the three stewards feed each quarterly edition for space. The standards are a preparatory working draft (2026) and are cited as drafts, never as adopted standards.

6.4GCRI reading: the model card

GCRI’s reading of this edition is its model card: what the national model is, what it computes and where it stops. It is printed in full in Annex A, with the methods it belongs to. Annex A, methodology

6.5Global Risks Forum reading: editorial essays

Four signed essays by the Reports editorial team set out the positions this edition takes. They are interpretation, labelled as such; the evidence they draw on is in the findings register.

6.6Global Risks Alliance reading: 2027 space readiness pack

The registers that open the 2027 global cycle. At baseline each is initialised from this edition.

Publication dispositions

• Publish
• Hold
• Needs evidence
• Restricted
• Superseded

6.7Nexus Standards reading: standards and regulatory watch

Instruments and published guidance that shape the systems in this edition, by status on the retrieval date. The edition assesses no one’s compliance.

• IN FORCE
• PUBLISHED
• DRAFT
• PUBLISHED · VOLUNTARY

6.8Risk Academy reading: literature and evidence review, science and assessments

The review behind this edition covers space assessments, peer-reviewed science and the institutional reports that bind its findings. Systematic reviews for each agenda item begin in 2027.

Review protocol

Question

What does the published evidence establish about space and orbital infrastructure and its couplings?

Sources searched

peer-reviewed journals and preprints; treaties, standards bodies and agencies; catalogue and agency reports; industry summaries

Window

releases available at evidence close, 30 September 2026

Selection

sources that bind or contextualise a finding in this edition

Next step

systematic reviews for agenda items 01 to 05 in 2027

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

1. 15NIST (ed.), Economic Benefits of the Global Positioning System to the US Private Sector (news page dated 2 October 2019, updated 3 February 2025; study by RTI International sponsored by NIST; about USD 1.4 trillion in 2017 dollars, 1984 to 2017). National Institute of Standards and Technology, Gaithersburg. Observation year 2019. Accessed 2026-11-03.back
2. 7NASA (ed.), What NASA is learning from the biggest geomagnetic storm in 20 years (article dated 9 May 2025; page updated 25 September 2026). National Aeronautics and Space Administration, Washington. Observation year 2024. Accessed 2026-11-03.back
3. 25UNVERIFIED, not opened: United Nations (ed.), Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies, 1967, cited from memory. United Nations, New York. Observation year 1967. Accessed 2026-11-03.back
4. 13United Nations Office for Outer Space Affairs (ed.), Convention on International Liability for Damage Caused by Space Objects (treaty page; General Assembly resolution 2777 (XXVI) of 29 November 1971; opened for signature 29 March 1972). United Nations, Vienna. Observation year 1972. Accessed 2026-11-03.back
5. 26UNVERIFIED, not opened: United Nations (ed.), Convention on Registration of Objects Launched into Outer Space, 1975, cited from memory. United Nations, New York. Observation year 1975. Accessed 2026-11-03.back
6. 18ITU (ed.), ITU-R Space Services Department (web page; Radio Regulations procedures, Master International Frequency Register, space sustainability support). International Telecommunication Union, Geneva. Observation year 2026. Accessed 2026-11-03.back
7. 11FCC (ed.), Second Report and Order, FCC 22-74, Mitigation of Orbital Debris in the New Space Age, IB Docket Nos. 22-271 and 18-313, adopted 29 September 2022, released 30 September 2022. Federal Communications Commission, Washington. Observation year 2022. Accessed 2026-11-03.back
8. 12ESA (ed.), ESA Zero Debris approach (web page, undated; target 2030). European Space Agency, Paris. Observation year 2023. Accessed 2026-11-03.back
9. 38UNVERIFIED, not opened: ESA Space Debris Office (ed.), ESA Space Debris Mitigation Requirements, Issue 1, 30 October 2023, taken from a file name on the Zero Debris page. European Space Agency, Darmstadt. Observation year 2023. Accessed 2026-11-03.back
10. 33UNVERIFIED, not opened: United Nations Committee on the Peaceful Uses of Outer Space (ed.), Guidelines for the Long-term Sustainability of Outer Space Activities, 2019, cited from memory. United Nations, Vienna. Observation year 2019. Accessed 2026-11-03.back
11. 34UNVERIFIED, not opened: Inter-Agency Space Debris Coordination Committee (ed.), IADC Space Debris Mitigation Guidelines, cited from memory; the page returned an access error. IADC. Observation year 2025. Accessed 2026-11-03.back
12. 14General Secretariat of the Council (ed.), Note 15830/25, Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), progress report for the Competitiveness Council of 8 and 9 December 2025, interinstitutional file 2025/0335 (COD), 26 November 2025. Council of the European Union, Brussels. Observation year 2025. Accessed 2026-11-03.back
13. 24UNVERIFIED, not opened: European Commission (ed.), Proposal for a Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), COM(2025) 335, published 25 June 2025, taken from search-result summaries; the Council note gives 26 June 2025 as the transmission date. European Commission, Brussels. Observation year 2025. Accessed 2026-11-03.back
14. 16POST-CLOSE, context only: NASA (ed.), Artemis Accords (web page; 78 signatories; most recent signing on 28 October 2026). National Aeronautics and Space Administration, Washington. Observation year 2026. Accessed 2026-11-03.back
15. 2ESA (ed.), ESA Space Environment Report 2026 (summary page dated 14 September 2026; data through the end of 2025; the full report PDF was not opened). European Space Agency, Paris. Observation year 2025. Accessed 2026-11-03.back
16. 6Parker, W.E. and Linares, R., Satellite Drag Analysis During the May 2024 Gannon Geomagnetic Storm, arXiv:2406.08617, 2024 (abstract page read; preprint). arXiv, Ithaca. Observation year 2024. Accessed 2026-11-03.back
17. 9Thiele, S., Heiland, S.R., Boley, A.C. and Lawler, S.M., An Orbital House of Cards: Frequent Satellite Close Conjunctions, arXiv:2512.09643, submitted 10 December 2025, version 3 of 29 June 2026 (abstract page read; preprint, peer review not located; the abstract of this version gives 5.5 days and 164 days). arXiv, Ithaca. Observation year 2025. Accessed 2026-11-03.back
18. 10Ferreira, J.P., Huang, Z., Nomura, K. and Wang, J., Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega-Constellations, Geophysical Research Letters 51, 2024, DOI 10.1029/2024GL109280 (full text read; modelling study). American Geophysical Union, Washington. Observation year 2022. Accessed 2026-11-03. doi:10.1029/2024GL109280back
19. 30UNVERIFIED, not opened: Maloney, C. and others, study of satellite reentry aluminum in the atmosphere, Journal of Geophysical Research: Atmospheres, April 2025, taken from a search-result summary that says its modelling did not include interactive ozone chemistry. Observation year 2025. Accessed 2026-11-03.back
20. 39UNVERIFIED, not opened: Hayakawa, H. and others, The Solar and Geomagnetic Storms in 2024 May: A Flash Data Report, The Astrophysical Journal, 2025, cited from memory. Observation year 2025. Accessed 2026-11-03.back
21. 29UNVERIFIED, not opened: Ryan, R.G. and others, Impact of Rocket Launch and Space Debris Air Pollution on Stratospheric Ozone and Global Climate, Earth’s Future 10, e2021EF002612, 2022, cited from memory. Observation year 2022. Accessed 2026-11-03.back
22. 27UNVERIFIED, not opened: Kessler, D.J. and Cour-Palais, B.G., Collision frequency of artificial satellites: the creation of a debris belt, Journal of Geophysical Research 83, 2637 to 2646, 1978, cited from memory. Observation year 1978. Accessed 2026-11-03.back
23. 28UNVERIFIED, not opened: Boley, A.C. and Byers, M., Satellite mega-constellations create risks in Low Earth Orbit, the atmosphere and on Earth, Scientific Reports 11, 10642, 2021, cited from memory. Observation year 2021. Accessed 2026-11-03.back
24. 42UNVERIFIED, not opened: Tsurutani, B.T. and others, The extreme magnetic storm of 1 to 2 September 1859, Journal of Geophysical Research 108(A7), 1268, 2003, cited from memory. Observation year 2003. Accessed 2026-11-03.back
25. 35UNVERIFIED, not opened: Royal Academy of Engineering (ed.), Global Navigation Space Systems: reliance and vulnerabilities, March 2011, cited from memory; the page returned an error. Royal Academy of Engineering, London. Observation year 2011. Accessed 2026-11-03.back
26. 40UNVERIFIED, not opened: Secure World Foundation (ed.), Global Counterspace Capabilities: An Open Source Assessment, 2025 edition, cited from memory. Secure World Foundation, Broomfield. Observation year 2025. Accessed 2026-11-03.back
27. 23UNVERIFIED, not opened: Space Foundation (ed.), The Space Report 2025 Q2 (global space economy USD 613 billion in 2024, about 7.8% growth, about 78% commercial), taken from search-result summaries; the page returned an access error. Space Foundation, Colorado Springs. Observation year 2024. Accessed 2026-11-03.back
28. 22SIA (ed.), State of the Satellite Industry Report, 2026 edition covering fiscal year 2025 (web page read; the executive summary was not read and no figure is used). Satellite Industry Association, Washington. Observation year 2025. Accessed 2026-11-03.back
29. 43UNVERIFIED, not opened: FCC (ed.), authorisation of the Kuiper satellite system, July 2020, cited from memory. Federal Communications Commission, Washington. Observation year 2020. Accessed 2026-11-03.back
30. 41UNVERIFIED, not opened: European Parliament and Council, Regulation (EU) 2023/588 establishing the Union Secure Connectivity Programme for the period 2023 to 2027, March 2023, cited from memory. European Union, Brussels. Observation year 2023. Accessed 2026-11-03.back
31. 37UNVERIFIED, not opened: NASA (ed.), NASA Procedural Requirements and Standard Practices for orbital debris mitigation, 2019 edition, named in the FCC order and cited from memory. National Aeronautics and Space Administration, Washington. Observation year 2019. Accessed 2026-11-03.back
32. 32UNVERIFIED, not opened: United Nations General Assembly resolution 77/41 on destructive direct-ascent anti-satellite missile tests, December 2022, cited from memory; the document viewer returned no text. United Nations, New York. Observation year 2022. Accessed 2026-11-03.back
33. 31UNVERIFIED, not opened: US Department of State (ed.), press statement on the Russian direct-ascent anti-satellite missile test of November 2021, 15 November 2021, cited from memory; the page returned an access error. US Department of State, Washington. Observation year 2021. Accessed 2026-11-03.back
34. 4NASA Orbital Debris Program Office (ed.), Orbital Debris Quarterly News, Volume 30, Issue 3, September 2026 (satellite box score as of 4 August 2026; launch table May to July 2026). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
35. 5NASA Orbital Debris Program Office (ed.), Orbital debris frequently asked questions (more than 34,000 objects catalogued as of August 2026; about 100 million millimeter-sized pieces; 41 ISS avoidance maneuvers since 1999). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
36. 1ESA (ed.), ESA Space Environment Report 2025 (summary page dated 1 April 2025; data through the end of 2024). European Space Agency, Paris. Observation year 2024. Accessed 2026-11-03.back
37. 3McDowell, J., Active satellites statistics page (state at 2026 Oct 26; independent expert tracker, not an official catalogue; headline 17,099, category total 17,098). Jonathan McDowell, Cambridge MA. Observation year 2026. Accessed 2026-11-03.back
38. 8NOAA Space Weather Prediction Center (ed.), NOAA Space Weather Scales explanation page (G5 extreme geomagnetic storm). National Oceanic and Atmospheric Administration, Boulder. Observation year 2026. Accessed 2026-11-03.back
39. 17NASA (ed.), International Space Station (web page; 25 years of continuous human presence marked on 2 November 2025). National Aeronautics and Space Administration, Washington. Observation year 2025. Accessed 2026-11-03.back
40. 21EUSPA (ed.), Galileo (web page last modified 25 September 2026; no satellite count on the page). European Union Agency for the Space Programme, Prague. Observation year 2026. Accessed 2026-11-03.back
41. 19CISA and FBI (eds.), Strengthening Cybersecurity of SATCOM Network Providers and Customers, Advisory AA22-076A, published 17 March 2022, revised 10 May 2022. Cybersecurity and Infrastructure Security Agency, Arlington. Observation year 2022. Accessed 2026-11-03.back
42. 20UK Government (ed.), Russia behind cyber attack with Europe-wide impact an hour before Ukraine invasion (news story of 10 May 2022; company statements are quoted by the government and are weak evidence). Foreign, Commonwealth and Development Office, London. Observation year 2022. Accessed 2026-11-03.back
43. 36UNVERIFIED, not opened: Council of the European Union (ed.), Russian cyber operations against Ukraine: declaration by the High Representative on behalf of the EU, 10 May 2022, cited from memory; the page returned an access error. Council of the European Union, Brussels. Observation year 2022. Accessed 2026-11-03.back

7.1Questions for the operational series

1. Q-01

   How can object counts from national networks, ESA and public trackers be reconciled on one basis?

   INI-XT18-CAT-01 · catalogues on a common basis; first output: reconciliation table.

2. Q-02

   How many satellites would face loss of control in a severe storm, and how long would recovery take?

   INI-XT18-WXS-02 · storm exposure; first output: exposure estimate.

3. Q-03

   Which sectors lose navigation or timing first, and for how long, in a multi-day outage?

   INI-XT18-NAV-03 · navigation and timing dependence; first output: dependence map.

4. Q-04

   What do launches and reentries inject into the upper atmosphere, by species?

   INI-XT18-EMS-04 · launch and reentry emissions; first output: emissions inventory.

5. Q-05

   Which licensing and disposal rules apply in each orbital regime, and how do they differ?

   INI-XT18-LAW-05 · rules and licensing map; first output: rules overlay.

6. Q-06

   What is the supply base for satellite hardware, ground stations and launch?

   To be admitted in 2027; first output: dependence map.

7. Q-07

   What workforce exists for operations, launch and space safety?

   To be admitted in 2027; first output: scoping note.

8. Q-08

   Which readiness capabilities have been tested in real events, and which are only planned?

   Readiness capability register; first output: rung evidence for 15 functions.

7.2Portfolio proposed for the Q1 2027 alignment

Five initiatives and one Universe mission candidate are proposed for the 2027 space portfolio. They are programme objects: no partner, funder or member is attached to them in this edition.

7.3The pathway

The space edition reads national readiness chapters, the coupled sector reports on infrastructure, cyber and Earth observation, and the global edition through one governed evidence graph. At baseline the federation is designed; the global energy and cyber editions are drafted. This page states what exists today and what comes next.

1. 01

   National readiness chapters

   space dependence and orbital readiness in each national edition

   IN PREPARATION · national baselines

2. 02

   Sector couplings

   GS-09 infrastructure · GS-12 Earth observation · GS-13 cyber

   GS-09 DRAFTED · sector baselines

3. 03

   Technology system model

   traffic, weather, navigation, atmosphere, governance

   v0 SPECIFIED · v1 with federation evidence

4. 04

   Strategic links

   SR-02 lifeline systems · SR-13 strategic technology

   PLANNED · strategic baselines

5. 05

   Universe

   annual proving environment

   CANDIDATE MISSION · mandate in 2027

6. 06

   XT-18 report

   this series

   BASELINE DRAFT · 2027 annual edition

7. 07

   Evidence and correction

   one graph, many projections

   OPEN · first correction cycle in 2027

7.4Universe 2027: evidence pack for the space candidate mission

1. 01

   Mandate

2. 02

   Core Build · 1 month

3. 03

   Action · 1 week

4. 04

   Evidence seal

5. 05

   Portfolio correction

6. 06

   Next mandate

Mission

ID

MSN-XT18-2027-01 · Storm in a crowded orbit Universe mission

Role spine

Leadership sponsor · Institutional anchor · Mission lead: drawn from national pathways

Receiving actors

to be identified with the mandate

7.5Handoffs and routing

Where the baseline’s findings go next. A handoff routes a finding for awareness, review or work; it transfers no authority.

7.6Feeds and signal register

Escalation routes

• none · keep monitoring
• research question
• project
• risk object
• annual publication
• signal report

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

1. 9Thiele, S., Heiland, S.R., Boley, A.C. and Lawler, S.M., An Orbital House of Cards: Frequent Satellite Close Conjunctions, arXiv:2512.09643, submitted 10 December 2025, version 3 of 29 June 2026 (abstract page read; preprint, peer review not located; the abstract of this version gives 5.5 days and 164 days). arXiv, Ithaca. Observation year 2025. Accessed 2026-11-03.back
2. 7NASA (ed.), What NASA is learning from the biggest geomagnetic storm in 20 years (article dated 9 May 2025; page updated 25 September 2026). National Aeronautics and Space Administration, Washington. Observation year 2024. Accessed 2026-11-03.back
3. 20UK Government (ed.), Russia behind cyber attack with Europe-wide impact an hour before Ukraine invasion (news story of 10 May 2022; company statements are quoted by the government and are weak evidence). Foreign, Commonwealth and Development Office, London. Observation year 2022. Accessed 2026-11-03.back

8.1Orbital hardware and traffic

Satellites, rocket bodies and debris share a small number of orbital shells. Counts are strong where a catalogue exists, and differ by basis between catalogues.

Related editions

• GLB Global Systems
• GS-09 Infrastructure, Transport and Logistics
• GS-12 Earth Observation and Planetary Intelligence
• GS-13 Cyber and Digital Systems
• XT-19 Earth Observation and Geospatial Intelligence
• SR-02 Critical Infrastructure and Lifeline Systems

8.2Launch, reentry and atmospheric footprint

Launches and reentries are rising. Their effect on the upper atmosphere is modelled and not yet measured on a common basis.

Related editions

• GLB Global Systems
• GS-09 Infrastructure, Transport and Logistics
• GS-12 Earth Observation and Planetary Intelligence
• GS-13 Cyber and Digital Systems
• XT-19 Earth Observation and Geospatial Intelligence
• SR-02 Critical Infrastructure and Lifeline Systems

8.3Space weather, navigation and the ground segment

Navigation, timing and communications links tie orbit to farming, finance and power on the ground. A severe storm and a cyberattack each showed a path of failure.

Related editions

• GLB Global Systems
• GS-09 Infrastructure, Transport and Logistics
• GS-12 Earth Observation and Planetary Intelligence
• GS-13 Cyber and Digital Systems
• XT-19 Earth Observation and Geospatial Intelligence
• SR-02 Critical Infrastructure and Lifeline Systems

8.4Economy, investment and workforce

Space is a large and growing economy, but the figures here rest on summaries and on one study of GPS. Workforce and public finance are the thin parts.

Related editions

• GLB Global Systems
• GS-09 Infrastructure, Transport and Logistics
• GS-12 Earth Observation and Planetary Intelligence
• GS-13 Cyber and Digital Systems
• XT-19 Earth Observation and Geospatial Intelligence
• SR-02 Critical Infrastructure and Lifeline Systems

8.5Security, law and governance watch

Space activity is governed by treaties, licences, voluntary guidelines and a draft EU regulation. The rules are tightening, and agreement on the largest proposal is slow.

Related editions

• GLB Global Systems
• GS-09 Infrastructure, Transport and Logistics
• GS-12 Earth Observation and Planetary Intelligence
• GS-13 Cyber and Digital Systems
• XT-19 Earth Observation and Geospatial Intelligence
• SR-02 Critical Infrastructure and Lifeline Systems

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

1. 4NASA Orbital Debris Program Office (ed.), Orbital Debris Quarterly News, Volume 30, Issue 3, September 2026 (satellite box score as of 4 August 2026; launch table May to July 2026). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
2. 3McDowell, J., Active satellites statistics page (state at 2026 Oct 26; independent expert tracker, not an official catalogue; headline 17,099, category total 17,098). Jonathan McDowell, Cambridge MA. Observation year 2026. Accessed 2026-11-03.back
3. 2ESA (ed.), ESA Space Environment Report 2026 (summary page dated 14 September 2026; data through the end of 2025; the full report PDF was not opened). European Space Agency, Paris. Observation year 2025. Accessed 2026-11-03.back
4. 1ESA (ed.), ESA Space Environment Report 2025 (summary page dated 1 April 2025; data through the end of 2024). European Space Agency, Paris. Observation year 2024. Accessed 2026-11-03.back
5. 5NASA Orbital Debris Program Office (ed.), Orbital debris frequently asked questions (more than 34,000 objects catalogued as of August 2026; about 100 million millimeter-sized pieces; 41 ISS avoidance maneuvers since 1999). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
6. 10Ferreira, J.P., Huang, Z., Nomura, K. and Wang, J., Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega-Constellations, Geophysical Research Letters 51, 2024, DOI 10.1029/2024GL109280 (full text read; modelling study). American Geophysical Union, Washington. Observation year 2022. Accessed 2026-11-03. doi:10.1029/2024GL109280back
7. 29UNVERIFIED, not opened: Ryan, R.G. and others, Impact of Rocket Launch and Space Debris Air Pollution on Stratospheric Ozone and Global Climate, Earth’s Future 10, e2021EF002612, 2022, cited from memory. Observation year 2022. Accessed 2026-11-03.back
8. 30UNVERIFIED, not opened: Maloney, C. and others, study of satellite reentry aluminum in the atmosphere, Journal of Geophysical Research: Atmospheres, April 2025, taken from a search-result summary that says its modelling did not include interactive ozone chemistry. Observation year 2025. Accessed 2026-11-03.back
9. 7NASA (ed.), What NASA is learning from the biggest geomagnetic storm in 20 years (article dated 9 May 2025; page updated 25 September 2026). National Aeronautics and Space Administration, Washington. Observation year 2024. Accessed 2026-11-03.back
10. 15NIST (ed.), Economic Benefits of the Global Positioning System to the US Private Sector (news page dated 2 October 2019, updated 3 February 2025; study by RTI International sponsored by NIST; about USD 1.4 trillion in 2017 dollars, 1984 to 2017). National Institute of Standards and Technology, Gaithersburg. Observation year 2019. Accessed 2026-11-03.back
11. 20UK Government (ed.), Russia behind cyber attack with Europe-wide impact an hour before Ukraine invasion (news story of 10 May 2022; company statements are quoted by the government and are weak evidence). Foreign, Commonwealth and Development Office, London. Observation year 2022. Accessed 2026-11-03.back
12. 19CISA and FBI (eds.), Strengthening Cybersecurity of SATCOM Network Providers and Customers, Advisory AA22-076A, published 17 March 2022, revised 10 May 2022. Cybersecurity and Infrastructure Security Agency, Arlington. Observation year 2022. Accessed 2026-11-03.back
13. 23UNVERIFIED, not opened: Space Foundation (ed.), The Space Report 2025 Q2 (global space economy USD 613 billion in 2024, about 7.8% growth, about 78% commercial), taken from search-result summaries; the page returned an access error. Space Foundation, Colorado Springs. Observation year 2024. Accessed 2026-11-03.back
14. 17NASA (ed.), International Space Station (web page; 25 years of continuous human presence marked on 2 November 2025). National Aeronautics and Space Administration, Washington. Observation year 2025. Accessed 2026-11-03.back
15. 22SIA (ed.), State of the Satellite Industry Report, 2026 edition covering fiscal year 2025 (web page read; the executive summary was not read and no figure is used). Satellite Industry Association, Washington. Observation year 2025. Accessed 2026-11-03.back
16. 41UNVERIFIED, not opened: European Parliament and Council, Regulation (EU) 2023/588 establishing the Union Secure Connectivity Programme for the period 2023 to 2027, March 2023, cited from memory. European Union, Brussels. Observation year 2023. Accessed 2026-11-03.back
17. 11FCC (ed.), Second Report and Order, FCC 22-74, Mitigation of Orbital Debris in the New Space Age, IB Docket Nos. 22-271 and 18-313, adopted 29 September 2022, released 30 September 2022. Federal Communications Commission, Washington. Observation year 2022. Accessed 2026-11-03.back
18. 16POST-CLOSE, context only: NASA (ed.), Artemis Accords (web page; 78 signatories; most recent signing on 28 October 2026). National Aeronautics and Space Administration, Washington. Observation year 2026. Accessed 2026-11-03.back
19. 14General Secretariat of the Council (ed.), Note 15830/25, Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), progress report for the Competitiveness Council of 8 and 9 December 2025, interinstitutional file 2025/0335 (COD), 26 November 2025. Council of the European Union, Brussels. Observation year 2025. Accessed 2026-11-03.back
20. 13United Nations Office for Outer Space Affairs (ed.), Convention on International Liability for Damage Caused by Space Objects (treaty page; General Assembly resolution 2777 (XXVI) of 29 November 1971; opened for signature 29 March 1972). United Nations, Vienna. Observation year 1972. Accessed 2026-11-03.back
21. 25UNVERIFIED, not opened: United Nations (ed.), Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies, 1967, cited from memory. United Nations, New York. Observation year 1967. Accessed 2026-11-03.back
22. 26UNVERIFIED, not opened: United Nations (ed.), Convention on Registration of Objects Launched into Outer Space, 1975, cited from memory. United Nations, New York. Observation year 1975. Accessed 2026-11-03.back
23. 24UNVERIFIED, not opened: European Commission (ed.), Proposal for a Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), COM(2025) 335, published 25 June 2025, taken from search-result summaries; the Council note gives 26 June 2025 as the transmission date. European Commission, Brussels. Observation year 2025. Accessed 2026-11-03.back
24. 18ITU (ed.), ITU-R Space Services Department (web page; Radio Regulations procedures, Master International Frequency Register, space sustainability support). International Telecommunication Union, Geneva. Observation year 2026. Accessed 2026-11-03.back
25. 33UNVERIFIED, not opened: United Nations Committee on the Peaceful Uses of Outer Space (ed.), Guidelines for the Long-term Sustainability of Outer Space Activities, 2019, cited from memory. United Nations, Vienna. Observation year 2019. Accessed 2026-11-03.back

A.1Methods

The global baseline uses published values and four simple derivations. Each is shown in full so that any reader can reproduce it.

A.2Model card, Space System Model v0

Model ID

MDL-XT18-SPACE · v0.1

Purpose

represent orbital infrastructure as shared infrastructure coupled to space weather, navigation and timing, communications, cyber security, atmosphere and governance

Family

graph-based system of systems

Inputs

the cited sources of this edition; no proprietary data

Method

expert-specified coupling strengths (STRONG · MODERATE · WEAK) from assessments and analogue events

Validation

none yet, first validation against federation evidence in 2027

Uncertainty

qualitative; strengths are hypotheses, not measurements

Domain of validity

global scale; not for asset-, site- or country-level use

Reproducibility

strength table and sources published in this edition

A.3The baseline evidence cut

Every Nexus edition is published from a frozen evidence cut. The global baseline cut is documentary: it pins the exact edition of every source cited. Federation cuts begin with the first national Foundry cuts in 2027.

Cut ID

DC-XTECH-SPACE-GLOBAL-2026-B0

Type

baseline documentary cut

Resolution policy

pinned · as of 30 September 2026

Sources pinned

43 cited sources, each at the edition and access date in the references

Model runs

none at baseline, analytical values are stated with their method

Digest

computed at freeze and recorded in the publication record

Supersedes

nothing, first cut of the series

Superseded by

the 2027 space annual cut

Lineage

1. 01

   source edition

2. 02

   pinned citation

3. 03

   finding

4. 04

   page

5. 05

   publication record

A.4Evidence age and coverage

A 2026 global edition rests on evidence observed in many different years. This page shows each time base, so that no single year label hides older evidence.

A.5Evidence cards, two anchor sources

Evidence cards to follow in 2027

• ESA²: tracked object and fragmentation counts in the full report
• Parker and Linares⁶: forecast assessment details
• Thiele and others⁹: peer review and assumptions of the CRASH Clock
• European Commission²⁴: proposal text

A.6Publication acceptance record

Editorial self-check at evidence close. Every applicable item carries a disposition; the remaining items are review, approval and deposit.

A.7Status words

A.8How the edition is made, released and corrected

Every edition is built from a sealed evidence cut, reviewed under three keys, signed and deposited before any site shows it as published; corrections go to Nexus Standards as change proposals and feed the next cut.

A teaching model of the process, not a forecast and not a record of any run; dates and counts on this page come from the programme record. Sources: Reports governance at GCRI Canada (2026); Zenodo, repository of record for Reports deposits (2026).

Lifecycle, one state at a time: Draft, Computed, Evidence bound, Reviewed, Approved for release, Published, Corrected, Superseded. This edition is a draft.

A.9Glossary and abbreviations

A.10Technical annex

A.1 · indicator definition: CRASH Clock

Construct

time to a possible catastrophic collision if satellites stopped maneuvering or situational awareness were severely lost

Unit

days

Method

computed from catalogued orbits and conjunction frequency under stated assumptions

Source

arXiv preprint, revised June 2026⁹

Uncertainty

earlier versions and press reports gave other values; assumptions drive the result

Known limits

a model metric, not a forecast; peer review not located

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

1. 1ESA (ed.), ESA Space Environment Report 2025 (summary page dated 1 April 2025; data through the end of 2024). European Space Agency, Paris. Observation year 2024. Accessed 2026-11-03.back
2. 4NASA Orbital Debris Program Office (ed.), Orbital Debris Quarterly News, Volume 30, Issue 3, September 2026 (satellite box score as of 4 August 2026; launch table May to July 2026). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
3. 5NASA Orbital Debris Program Office (ed.), Orbital debris frequently asked questions (more than 34,000 objects catalogued as of August 2026; about 100 million millimeter-sized pieces; 41 ISS avoidance maneuvers since 1999). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
4. 2ESA (ed.), ESA Space Environment Report 2026 (summary page dated 14 September 2026; data through the end of 2025; the full report PDF was not opened). European Space Agency, Paris. Observation year 2025. Accessed 2026-11-03.back
5. 9Thiele, S., Heiland, S.R., Boley, A.C. and Lawler, S.M., An Orbital House of Cards: Frequent Satellite Close Conjunctions, arXiv:2512.09643, submitted 10 December 2025, version 3 of 29 June 2026 (abstract page read; preprint, peer review not located; the abstract of this version gives 5.5 days and 164 days). arXiv, Ithaca. Observation year 2025. Accessed 2026-11-03.back
6. 10Ferreira, J.P., Huang, Z., Nomura, K. and Wang, J., Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega-Constellations, Geophysical Research Letters 51, 2024, DOI 10.1029/2024GL109280 (full text read; modelling study). American Geophysical Union, Washington. Observation year 2022. Accessed 2026-11-03. doi:10.1029/2024GL109280back
7. 29UNVERIFIED, not opened: Ryan, R.G. and others, Impact of Rocket Launch and Space Debris Air Pollution on Stratospheric Ozone and Global Climate, Earth’s Future 10, e2021EF002612, 2022, cited from memory. Observation year 2022. Accessed 2026-11-03.back
8. 30UNVERIFIED, not opened: Maloney, C. and others, study of satellite reentry aluminum in the atmosphere, Journal of Geophysical Research: Atmospheres, April 2025, taken from a search-result summary that says its modelling did not include interactive ozone chemistry. Observation year 2025. Accessed 2026-11-03.back
9. 22SIA (ed.), State of the Satellite Industry Report, 2026 edition covering fiscal year 2025 (web page read; the executive summary was not read and no figure is used). Satellite Industry Association, Washington. Observation year 2025. Accessed 2026-11-03.back
10. 23UNVERIFIED, not opened: Space Foundation (ed.), The Space Report 2025 Q2 (global space economy USD 613 billion in 2024, about 7.8% growth, about 78% commercial), taken from search-result summaries; the page returned an access error. Space Foundation, Colorado Springs. Observation year 2024. Accessed 2026-11-03.back
11. 24UNVERIFIED, not opened: European Commission (ed.), Proposal for a Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), COM(2025) 335, published 25 June 2025, taken from search-result summaries; the Council note gives 26 June 2025 as the transmission date. European Commission, Brussels. Observation year 2025. Accessed 2026-11-03.back
12. 14General Secretariat of the Council (ed.), Note 15830/25, Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), progress report for the Competitiveness Council of 8 and 9 December 2025, interinstitutional file 2025/0335 (COD), 26 November 2025. Council of the European Union, Brussels. Observation year 2025. Accessed 2026-11-03.back
13. 11FCC (ed.), Second Report and Order, FCC 22-74, Mitigation of Orbital Debris in the New Space Age, IB Docket Nos. 22-271 and 18-313, adopted 29 September 2022, released 30 September 2022. Federal Communications Commission, Washington. Observation year 2022. Accessed 2026-11-03.back
14. 21EUSPA (ed.), Galileo (web page last modified 25 September 2026; no satellite count on the page). European Union Agency for the Space Programme, Prague. Observation year 2026. Accessed 2026-11-03.back
15. 35UNVERIFIED, not opened: Royal Academy of Engineering (ed.), Global Navigation Space Systems: reliance and vulnerabilities, March 2011, cited from memory; the page returned an error. Royal Academy of Engineering, London. Observation year 2011. Accessed 2026-11-03.back
16. 15NIST (ed.), Economic Benefits of the Global Positioning System to the US Private Sector (news page dated 2 October 2019, updated 3 February 2025; study by RTI International sponsored by NIST; about USD 1.4 trillion in 2017 dollars, 1984 to 2017). National Institute of Standards and Technology, Gaithersburg. Observation year 2019. Accessed 2026-11-03.back
17. 6Parker, W.E. and Linares, R., Satellite Drag Analysis During the May 2024 Gannon Geomagnetic Storm, arXiv:2406.08617, 2024 (abstract page read; preprint). arXiv, Ithaca. Observation year 2024. Accessed 2026-11-03.back

B.1The indicator set

B.2Global source register

The governed source set behind this edition. Each source keeps its authority, coverage, cadence and role; categories describe origin, not truth.

Domains bound by the register

• INF
• DAT
• CLI
• FOO
• ENE
• FIN
• TRD
• WAT
• HLT
• MIN

B.3Regional reading, space across ten clusters

Regional plates follow with the regional editions. This page gives the regional reading of orbital infrastructure and exposure in table form and ranks no region.

B.4Cluster card: low Earth orbit near 550 km

• orbital shell
• constellations
• debris
• maneuvering

Systems in view

constellation satellites, debris, tracking networks

Defining events

the May 2024 storm raised drag on thousands of satellites⁷

Couplings

SPW → INF drag; INF → DAT services; GOV → INF disposal rules

Capability evidence

ESA reports about 80% of low-orbit rocket bodies meeting its five-year standard¹

Gaps

conjunction counts; maneuver counts; objects too small to track

Agenda items

Q-01 · Q-02

B.5How countries appear in the space edition

Countries enter the space edition through the readiness chapters of their own national editions, on one card grammar. They are read against peer distributions and thresholds, never ranked.

Editions in the 2026 Baseline programme

How to read a country card

• Each system is shown against the distribution of its peers, with thresholds where they exist
• Couplings and risk objects come from the country’s own national edition
• Capability rungs record evidence, not a judgement of institutions
• Evidence age is printed, so older national data are visible as such

B.6Licences

B.7Formats and provenance

Provenance

Edition pack

The edition’s content pack (JSON), from which the print and web editions are built

Evidence cut

DC-XTECH-SPACE-GLOBAL-2026-B0, closed 30 September 2026

Reproducibility

sourced values cited; analytical values reproducible from stated parameters

Self-check

14 of 23 at evidence close; a fail on any item blocks release

Review

five passes scheduled before release (in Annex C)

Publisher of record

GCRI for the Nexus Consortium

Corrections

Registry correction pathway; upheld corrections are published as notices with a new version

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

1. 4NASA Orbital Debris Program Office (ed.), Orbital Debris Quarterly News, Volume 30, Issue 3, September 2026 (satellite box score as of 4 August 2026; launch table May to July 2026). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
2. 3McDowell, J., Active satellites statistics page (state at 2026 Oct 26; independent expert tracker, not an official catalogue; headline 17,099, category total 17,098). Jonathan McDowell, Cambridge MA. Observation year 2026. Accessed 2026-11-03.back
3. 1ESA (ed.), ESA Space Environment Report 2025 (summary page dated 1 April 2025; data through the end of 2024). European Space Agency, Paris. Observation year 2024. Accessed 2026-11-03.back
4. 2ESA (ed.), ESA Space Environment Report 2026 (summary page dated 14 September 2026; data through the end of 2025; the full report PDF was not opened). European Space Agency, Paris. Observation year 2025. Accessed 2026-11-03.back
5. 9Thiele, S., Heiland, S.R., Boley, A.C. and Lawler, S.M., An Orbital House of Cards: Frequent Satellite Close Conjunctions, arXiv:2512.09643, submitted 10 December 2025, version 3 of 29 June 2026 (abstract page read; preprint, peer review not located; the abstract of this version gives 5.5 days and 164 days). arXiv, Ithaca. Observation year 2025. Accessed 2026-11-03.back
6. 10Ferreira, J.P., Huang, Z., Nomura, K. and Wang, J., Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega-Constellations, Geophysical Research Letters 51, 2024, DOI 10.1029/2024GL109280 (full text read; modelling study). American Geophysical Union, Washington. Observation year 2022. Accessed 2026-11-03. doi:10.1029/2024GL109280back
7. 15NIST (ed.), Economic Benefits of the Global Positioning System to the US Private Sector (news page dated 2 October 2019, updated 3 February 2025; study by RTI International sponsored by NIST; about USD 1.4 trillion in 2017 dollars, 1984 to 2017). National Institute of Standards and Technology, Gaithersburg. Observation year 2019. Accessed 2026-11-03.back
8. 5NASA Orbital Debris Program Office (ed.), Orbital debris frequently asked questions (more than 34,000 objects catalogued as of August 2026; about 100 million millimeter-sized pieces; 41 ISS avoidance maneuvers since 1999). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03.back
9. 7NASA (ed.), What NASA is learning from the biggest geomagnetic storm in 20 years (article dated 9 May 2025; page updated 25 September 2026). National Aeronautics and Space Administration, Washington. Observation year 2024. Accessed 2026-11-03.back
10. 8NOAA Space Weather Prediction Center (ed.), NOAA Space Weather Scales explanation page (G5 extreme geomagnetic storm). National Oceanic and Atmospheric Administration, Boulder. Observation year 2026. Accessed 2026-11-03.back
11. 20UK Government (ed.), Russia behind cyber attack with Europe-wide impact an hour before Ukraine invasion (news story of 10 May 2022; company statements are quoted by the government and are weak evidence). Foreign, Commonwealth and Development Office, London. Observation year 2022. Accessed 2026-11-03.back
12. 11FCC (ed.), Second Report and Order, FCC 22-74, Mitigation of Orbital Debris in the New Space Age, IB Docket Nos. 22-271 and 18-313, adopted 29 September 2022, released 30 September 2022. Federal Communications Commission, Washington. Observation year 2022. Accessed 2026-11-03.back
13. 14General Secretariat of the Council (ed.), Note 15830/25, Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), progress report for the Competitiveness Council of 8 and 9 December 2025, interinstitutional file 2025/0335 (COD), 26 November 2025. Council of the European Union, Brussels. Observation year 2025. Accessed 2026-11-03.back
14. 12ESA (ed.), ESA Zero Debris approach (web page, undated; target 2030). European Space Agency, Paris. Observation year 2023. Accessed 2026-11-03.back
15. 21EUSPA (ed.), Galileo (web page last modified 25 September 2026; no satellite count on the page). European Union Agency for the Space Programme, Prague. Observation year 2026. Accessed 2026-11-03.back
16. 16POST-CLOSE, context only: NASA (ed.), Artemis Accords (web page; 78 signatories; most recent signing on 28 October 2026). National Aeronautics and Space Administration, Washington. Observation year 2026. Accessed 2026-11-03.back

C.143 sources

NR-CIT-1, editor first. A DOI is linked where the source has one; Nexus records carry a UNI once the catalogue allocates it (NS-1).

1. 1ESA (ed.), ESA Space Environment Report 2025 (summary page dated 1 April 2025; data through the end of 2024). European Space Agency, Paris. Observation year 2024. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 4, chapter 6, chapter 8
2. 2ESA (ed.), ESA Space Environment Report 2026 (summary page dated 14 September 2026; data through the end of 2025; the full report PDF was not opened). European Space Agency, Paris. Observation year 2025. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 4, chapter 6, chapter 8
3. 3McDowell, J., Active satellites statistics page (state at 2026 Oct 26; independent expert tracker, not an official catalogue; headline 17,099, category total 17,098). Jonathan McDowell, Cambridge MA. Observation year 2026. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 6, chapter 8
4. 4NASA Orbital Debris Program Office (ed.), Orbital Debris Quarterly News, Volume 30, Issue 3, September 2026 (satellite box score as of 4 August 2026; launch table May to July 2026). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 4, chapter 6, chapter 8
5. 5NASA Orbital Debris Program Office (ed.), Orbital debris frequently asked questions (more than 34,000 objects catalogued as of August 2026; about 100 million millimeter-sized pieces; 41 ISS avoidance maneuvers since 1999). National Aeronautics and Space Administration, Houston. Observation year 2026. Accessed 2026-11-03. Cited in the summary, chapter 2, chapter 4, chapter 6, chapter 8
6. 6Parker, W.E. and Linares, R., Satellite Drag Analysis During the May 2024 Gannon Geomagnetic Storm, arXiv:2406.08617, 2024 (abstract page read; preprint). arXiv, Ithaca. Observation year 2024. Accessed 2026-11-03. Cited in chapter 2, chapter 3, chapter 4, chapter 6
7. 7NASA (ed.), What NASA is learning from the biggest geomagnetic storm in 20 years (article dated 9 May 2025; page updated 25 September 2026). National Aeronautics and Space Administration, Washington. Observation year 2024. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 4, chapter 5, chapter 6, chapter 7, chapter 8
8. 8NOAA Space Weather Prediction Center (ed.), NOAA Space Weather Scales explanation page (G5 extreme geomagnetic storm). National Oceanic and Atmospheric Administration, Boulder. Observation year 2026. Accessed 2026-11-03. Cited in chapter 2, chapter 3, chapter 4, chapter 6
9. 9Thiele, S., Heiland, S.R., Boley, A.C. and Lawler, S.M., An Orbital House of Cards: Frequent Satellite Close Conjunctions, arXiv:2512.09643, submitted 10 December 2025, version 3 of 29 June 2026 (abstract page read; preprint, peer review not located; the abstract of this version gives 5.5 days and 164 days). arXiv, Ithaca. Observation year 2025. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 4, chapter 5, chapter 6, chapter 7
10. 10Ferreira, J.P., Huang, Z., Nomura, K. and Wang, J., Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega-Constellations, Geophysical Research Letters 51, 2024, DOI 10.1029/2024GL109280 (full text read; modelling study). American Geophysical Union, Washington. Observation year 2022. Accessed 2026-11-03. doi:10.1029/2024GL109280 Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 4, chapter 6, chapter 8
11. 11FCC (ed.), Second Report and Order, FCC 22-74, Mitigation of Orbital Debris in the New Space Age, IB Docket Nos. 22-271 and 18-313, adopted 29 September 2022, released 30 September 2022. Federal Communications Commission, Washington. Observation year 2022. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 4, chapter 6, chapter 8
12. 12ESA (ed.), ESA Zero Debris approach (web page, undated; target 2030). European Space Agency, Paris. Observation year 2023. Accessed 2026-11-03. Cited in chapter 4, chapter 6
13. 13United Nations Office for Outer Space Affairs (ed.), Convention on International Liability for Damage Caused by Space Objects (treaty page; General Assembly resolution 2777 (XXVI) of 29 November 1971; opened for signature 29 March 1972). United Nations, Vienna. Observation year 1972. Accessed 2026-11-03. Cited in chapter 3, chapter 4, chapter 6, chapter 8
14. 14General Secretariat of the Council (ed.), Note 15830/25, Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), progress report for the Competitiveness Council of 8 and 9 December 2025, interinstitutional file 2025/0335 (COD), 26 November 2025. Council of the European Union, Brussels. Observation year 2025. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 4, chapter 6, chapter 8
15. 15NIST (ed.), Economic Benefits of the Global Positioning System to the US Private Sector (news page dated 2 October 2019, updated 3 February 2025; study by RTI International sponsored by NIST; about USD 1.4 trillion in 2017 dollars, 1984 to 2017). National Institute of Standards and Technology, Gaithersburg. Observation year 2019. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 4, chapter 6, chapter 8
16. 16POST-CLOSE, context only: NASA (ed.), Artemis Accords (web page; 78 signatories; most recent signing on 28 October 2026). National Aeronautics and Space Administration, Washington. Observation year 2026. Accessed 2026-11-03. Cited in the summary, chapter 6, chapter 8
17. 17NASA (ed.), International Space Station (web page; 25 years of continuous human presence marked on 2 November 2025). National Aeronautics and Space Administration, Washington. Observation year 2025. Accessed 2026-11-03. Cited in chapter 6, chapter 8
18. 18ITU (ed.), ITU-R Space Services Department (web page; Radio Regulations procedures, Master International Frequency Register, space sustainability support). International Telecommunication Union, Geneva. Observation year 2026. Accessed 2026-11-03. Cited in chapter 3, chapter 4, chapter 6, chapter 8
19. 19CISA and FBI (eds.), Strengthening Cybersecurity of SATCOM Network Providers and Customers, Advisory AA22-076A, published 17 March 2022, revised 10 May 2022. Cybersecurity and Infrastructure Security Agency, Arlington. Observation year 2022. Accessed 2026-11-03. Cited in chapter 2, chapter 3, chapter 6, chapter 8
20. 20UK Government (ed.), Russia behind cyber attack with Europe-wide impact an hour before Ukraine invasion (news story of 10 May 2022; company statements are quoted by the government and are weak evidence). Foreign, Commonwealth and Development Office, London. Observation year 2022. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 4, chapter 6, chapter 7, chapter 8
21. 21EUSPA (ed.), Galileo (web page last modified 25 September 2026; no satellite count on the page). European Union Agency for the Space Programme, Prague. Observation year 2026. Accessed 2026-11-03. Cited in chapter 4, chapter 6
22. 22SIA (ed.), State of the Satellite Industry Report, 2026 edition covering fiscal year 2025 (web page read; the executive summary was not read and no figure is used). Satellite Industry Association, Washington. Observation year 2025. Accessed 2026-11-03. Cited in chapter 6, chapter 8
23. 23UNVERIFIED, not opened: Space Foundation (ed.), The Space Report 2025 Q2 (global space economy USD 613 billion in 2024, about 7.8% growth, about 78% commercial), taken from search-result summaries; the page returned an access error. Space Foundation, Colorado Springs. Observation year 2024. Accessed 2026-11-03. Cited in chapter 3, chapter 6, chapter 8
24. 24UNVERIFIED, not opened: European Commission (ed.), Proposal for a Regulation on the safety, resilience and sustainability of space activities in the Union (EU Space Act), COM(2025) 335, published 25 June 2025, taken from search-result summaries; the Council note gives 26 June 2025 as the transmission date. European Commission, Brussels. Observation year 2025. Accessed 2026-11-03. Cited in chapter 2, chapter 6, chapter 8
25. 25UNVERIFIED, not opened: United Nations (ed.), Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies, 1967, cited from memory. United Nations, New York. Observation year 1967. Accessed 2026-11-03. Cited in chapter 4, chapter 6, chapter 8
26. 26UNVERIFIED, not opened: United Nations (ed.), Convention on Registration of Objects Launched into Outer Space, 1975, cited from memory. United Nations, New York. Observation year 1975. Accessed 2026-11-03. Cited in chapter 6, chapter 8
27. 27UNVERIFIED, not opened: Kessler, D.J. and Cour-Palais, B.G., Collision frequency of artificial satellites: the creation of a debris belt, Journal of Geophysical Research 83, 2637 to 2646, 1978, cited from memory. Observation year 1978. Accessed 2026-11-03. Cited in chapter 3, chapter 4, chapter 6
28. 28UNVERIFIED, not opened: Boley, A.C. and Byers, M., Satellite mega-constellations create risks in Low Earth Orbit, the atmosphere and on Earth, Scientific Reports 11, 10642, 2021, cited from memory. Observation year 2021. Accessed 2026-11-03. Cited in chapter 4, chapter 6
29. 29UNVERIFIED, not opened: Ryan, R.G. and others, Impact of Rocket Launch and Space Debris Air Pollution on Stratospheric Ozone and Global Climate, Earth’s Future 10, e2021EF002612, 2022, cited from memory. Observation year 2022. Accessed 2026-11-03. Cited in chapter 6, chapter 8
30. 30UNVERIFIED, not opened: Maloney, C. and others, study of satellite reentry aluminum in the atmosphere, Journal of Geophysical Research: Atmospheres, April 2025, taken from a search-result summary that says its modelling did not include interactive ozone chemistry. Observation year 2025. Accessed 2026-11-03. Cited in chapter 6, chapter 8
31. 31UNVERIFIED, not opened: US Department of State (ed.), press statement on the Russian direct-ascent anti-satellite missile test of November 2021, 15 November 2021, cited from memory; the page returned an access error. US Department of State, Washington. Observation year 2021. Accessed 2026-11-03. Cited in chapter 6
32. 32UNVERIFIED, not opened: United Nations General Assembly resolution 77/41 on destructive direct-ascent anti-satellite missile tests, December 2022, cited from memory; the document viewer returned no text. United Nations, New York. Observation year 2022. Accessed 2026-11-03. Cited in chapter 6
33. 33UNVERIFIED, not opened: United Nations Committee on the Peaceful Uses of Outer Space (ed.), Guidelines for the Long-term Sustainability of Outer Space Activities, 2019, cited from memory. United Nations, Vienna. Observation year 2019. Accessed 2026-11-03. Cited in chapter 4, chapter 6, chapter 8
34. 34UNVERIFIED, not opened: Inter-Agency Space Debris Coordination Committee (ed.), IADC Space Debris Mitigation Guidelines, cited from memory; the page returned an access error. IADC. Observation year 2025. Accessed 2026-11-03. Cited in chapter 4, chapter 6
35. 35UNVERIFIED, not opened: Royal Academy of Engineering (ed.), Global Navigation Space Systems: reliance and vulnerabilities, March 2011, cited from memory; the page returned an error. Royal Academy of Engineering, London. Observation year 2011. Accessed 2026-11-03. Cited in chapter 6
36. 36UNVERIFIED, not opened: Council of the European Union (ed.), Russian cyber operations against Ukraine: declaration by the High Representative on behalf of the EU, 10 May 2022, cited from memory; the page returned an access error. Council of the European Union, Brussels. Observation year 2022. Accessed 2026-11-03. Cited in chapter 2, chapter 6
37. 37UNVERIFIED, not opened: NASA (ed.), NASA Procedural Requirements and Standard Practices for orbital debris mitigation, 2019 edition, named in the FCC order and cited from memory. National Aeronautics and Space Administration, Washington. Observation year 2019. Accessed 2026-11-03. Cited in chapter 6
38. 38UNVERIFIED, not opened: ESA Space Debris Office (ed.), ESA Space Debris Mitigation Requirements, Issue 1, 30 October 2023, taken from a file name on the Zero Debris page. European Space Agency, Darmstadt. Observation year 2023. Accessed 2026-11-03. Cited in chapter 6
39. 39UNVERIFIED, not opened: Hayakawa, H. and others, The Solar and Geomagnetic Storms in 2024 May: A Flash Data Report, The Astrophysical Journal, 2025, cited from memory. Observation year 2025. Accessed 2026-11-03. Cited in chapter 6
40. 40UNVERIFIED, not opened: Secure World Foundation (ed.), Global Counterspace Capabilities: An Open Source Assessment, 2025 edition, cited from memory. Secure World Foundation, Broomfield. Observation year 2025. Accessed 2026-11-03. Cited in chapter 6
41. 41UNVERIFIED, not opened: European Parliament and Council, Regulation (EU) 2023/588 establishing the Union Secure Connectivity Programme for the period 2023 to 2027, March 2023, cited from memory. European Union, Brussels. Observation year 2023. Accessed 2026-11-03. Cited in chapter 6, chapter 8
42. 42UNVERIFIED, not opened: Tsurutani, B.T. and others, The extreme magnetic storm of 1 to 2 September 1859, Journal of Geophysical Research 108(A7), 1268, 2003, cited from memory. Observation year 2003. Accessed 2026-11-03. Cited in chapter 6
43. 43UNVERIFIED, not opened: FCC (ed.), authorisation of the Kuiper satellite system, July 2020, cited from memory. Federal Communications Commission, Washington. Observation year 2020. Accessed 2026-11-03. Cited in chapter 6

C.2Publication record

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Reports Foundational Edition, Volume I, Part VII

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