On 2026-06-30, the China National Space Administration announced a feasibility-study-backed plan to build a space-ground integrated monitoring and early-warning network for near-Earth asteroids, revealed publicly on International Asteroid Day, 2026-07-01. The system will combine multiple large-aperture ground optical telescopes at geographically distributed sites with a space-based monitoring constellation to provide 24/7 surveillance with no blind spots, including objects approaching from the sunward direction that ground observatories cannot reliably see.
Technically, the design addresses two of the hardest problems in planetary defense: daylight/sun-glare blind spots and continuous orbit determination. China says it already has initial breakthroughs in risk-assessment models and algorithms and is developing an operational near-Earth asteroid early-warning system that will automatically calculate orbit and impact probability after a telescope detects a suspicious target. For a lunar habitat, this matters because lunar infrastructure is exposed, long-lived, and difficult to evacuate; early detection increases the time available for deflection, sheltering, power-grid hardening, and civil-continuity measures across Earth and Moon.
Ark action: track whether China proceeds from feasibility study to deployed observatories, how many telescopes and satellites are funded, and whether its space segment is positioned at Sun-Earth L1 or other orbital slots discussed in related technical reporting. The Ark should also monitor whether China publishes open interfaces for alert data, impact-probability models, or deflection coordination, because any global warning network improves restoration odds only if it can be integrated into a multinational planetary-defense and lunar emergency-response architecture.