16.7.4 — Planetary Resilience & Civilization Continuity — maturity: speculative

Existential Risk Monitoring

A sovereign satellite network dedicated to detecting, characterising and attributing threats capable of civilisation-scale harm, from asteroid impacts to engineered pandemics and nuclear exchange signatures.

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No single existential risk arrives with a polite warning. Near-Earth objects, large-scale volcanic super-eruptions, high-altitude nuclear detonations, and the atmospheric signatures of engineered biological release all share one property: the window between first detectable signal and irreversible consequence is measured in hours to weeks. Nations that depend on third-party data feeds or allied intelligence networks for this class of warning have, by definition, ceded the decision to act to whoever controls the sensor. That is not a posture any government with continuity-of-civilisation obligations can afford.

A sovereign existential risk monitoring constellation integrates multiple payloads on the same bus family: a wide-field UV-visible imager for bolide flash and nuclear fireball detection, a thermal infrared channel for supervolcanic precursor hotspot tracking, an atmospheric limb sounder for stratospheric aerosol loading, and an RF monitor for electromagnetic pulse signatures. The constellation is intentionally heterogeneous — different orbital planes, different sensor modalities — so that no single point of failure, jamming event, or adversary action can blind the network simultaneously. Onboard cross-payload correlation generates compound threat scores before any downlink occurs, reducing the ground processing latency that would otherwise eat into the decision window.

The operational outcome is a sovereign all-hazard dashboard that feeds directly into national continuity-of-government command channels, entirely independent of foreign data licensing or coalition goodwill. Alert thresholds are set by the nation's own risk doctrine, not by a commercial SLA or an allied intelligence committee. When a compound signal crosses threshold — say, a bolide impact coinciding with an unusual aerosol signature over a geopolitically sensitive region — the system pushes a classified tip within minutes to the heads of the relevant agencies, with enough sensor provenance to distinguish a natural catastrophe from a weapon. That distinction may be the most consequential data product a government ever receives.

What matters

A bolide capable of destroying a mid-sized city releases detectable UV and thermal energy for only 30–90 seconds; without a dedicated wide-field sensor in the right orbital plane, the event is reconstructed from seismic and infrasound data alone, too late for any protective action.
Nuclear detonation at altitude produces a distinctive EMP and optical double-flash signature that must be attributed within minutes to avoid retaliatory miscalculation — the Vela incident of 1979 remains the canonical example of what happens when attribution data is ambiguous.
Stratospheric aerosol injection from a super-eruption or large impact begins forcing global climate within weeks; early limb-sounder data cuts crop-failure lead time from months to days, enabling pre-emptive food-security interventions.
Existential-risk sensor data is inherently dual-use intelligence; any nation relying on a foreign constellation for this feed has implicitly granted that supplier veto power over the timing and content of its most consequential national security alerts.

Sovereignty score: 10/10 — A nation that cannot independently detect and attribute civilisation-scale threats has outsourced its survival to foreign actors with no treaty obligation to share data in time.

Attribution speed is sovereignty: nuclear-event optical data must be in national command authority hands within minutes of detonation; a dependency on a foreign constellation or allied sharing agreement introduces political latency that could trigger or fail to prevent retaliatory action based on incomplete information.
Commercial existential-risk data products do not yet exist at the required classification level, and any future vendor offering this capability will be subject to their home government's export licensing and crisis-time service-suspension authority — precisely the moment a customer most needs uninterrupted access.
The dual-use nature of wide-field UV, thermal infrared and RF monitoring payloads means that foreign suppliers capable of providing this service are also collecting intelligence on the customer nation's own territory, industrial facilities and military activities, creating an asymmetric intelligence relationship no serious state should accept.
Multilateral frameworks such as IAWN and the CTBTO IMS provide invaluable baseline data but carry no binding delivery-time guarantees and exclude or condition access for states not in good political standing with the dominant contributors, making sovereign backup capability a non-optional redundancy for any government with continuity-of-civilisation obligations.

Reference architecture

Payload: Four-payload per satellite suite: (1) wide-field UV-visible imager, 300–900 nm, 10-degree FOV, sub-second cadence for bolide flash and nuclear double-flash detection; (2) thermal infrared channel, 8–12 µm, 500m ground resolution for volcanic hotspot and fireball thermal signature; (3) atmospheric limb sounder, 1–15 µm, for stratospheric aerosol optical depth at 1km vertical resolution; (4) RF monitor, 10 kHz–1 GHz, for EMP pre-cursor and prompt nuclear radiation signature detection
Bus class: ESPA-class microsat, 220 kg wet, 900 W total power, radiation-hardened avionics rated to 100 krad TID; on-board GPU inference module for real-time compound threat scoring
Orbit: Two complementary constellations: 12 satellites in a 60-degree inclined MEO Walker at 8,000 km for persistent wide-area UV and EMP coverage; 6 satellites in sun-synchronous LEO at 700 km, 10:30 LTAN, for high-resolution thermal and limb-sounder passes — combined revisit under 15 minutes for any point on Earth
Ground segment: Hardened national primary ground station with direct-to-classified-network downlink (X-band, 150 Mbps); two geographically separated backup stations capable of autonomous constellation command; air-gapped continuity-of-government network interface; no commercial ground infrastructure dependencies
Software & data
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References

NASA Planetary Defense Coordination Office — Near-Earth Object Observations — NASA's PDCO coordinates detection, tracking and characterisation of near-Earth objects and maintains publicly accessible databases of impact probability. The office notes that space-based infrared and UV sensors are essential complements to ground-based telescopes for short-warning impactors approaching from the sunward direction.
ESA Space Safety Programme — Planetary Defence — ESA's planetary defence activities include the Flyeye telescope network and the Hera mission, with explicit recognition that impact warning timelines shorter than 72 hours can only be reliably closed by space-based assets. ESA documentation highlights the gap in southern-hemisphere optical coverage as a strategic vulnerability.
United Nations Office for Outer Space Affairs — International Asteroid Warning Network — UNOOSA coordinates the International Asteroid Warning Network and the Space Mission Planning Advisory Group, both of which acknowledge that sovereign member states bear independent responsibility for acting on impact warnings within their jurisdictions. The framework explicitly does not guarantee data delivery timelines to non-member or non-contributing states.
Comprehensive Nuclear-Test-Ban Treaty Organisation — International Monitoring System — The CTBTO operates a global network of seismic, hydroacoustic, infrasound and radionuclide sensors designed to detect nuclear detonations, including the space-based optical complement maintained by some member states. The organisation's data-sharing protocols are treaty-governed, meaning access can be conditioned on political compliance — a dependency sovereign risk doctrine must plan around.
Global Volcanism Program — Smithsonian Institution — The Smithsonian's Global Volcanism Program documents historical super-eruption events and their stratospheric aerosol loading, noting that satellite thermal infrared monitoring is the only practical method for detecting precursor caldera uplift at sub-weekly cadence across remote or ocean-basin volcanic systems.