The Crash Clock (mastodon.social)

A new paper titled "An Orbital House of Cards: Frequent Megaconstellation Close Conjunctions" raises alarming concerns about the increasing collision risks in Low Earth Orbit (LEO), particularly due to the proliferation of megaconstellations like Starlink. Researchers, led by Aaron Boley and a talented student team, calculated the frequency of close satellite approaches and found that in the most congested LEO zones, close encounters of less than 1 km now occur every 15 minutes—an increase from once a day prior to the advent of megaconstellations. They introduced the "CRASH Clock" metric to illustrate this escalating danger, indicating that the probability of collisions could exceed 10% per day without effective avoidance maneuvers. This research is significant as it underscores the urgent need for improved communication and coordination among satellite operators to prevent catastrophic collisions, which risk creating a cascade of debris that could render LEO unusable. The paper emphasizes that current satellite operational strategies, which are largely reactive, lack proactive measures to address the growing congestion and associated hazards in orbit. With the stakes so high, including potential disruptions to astronomy and atmospheric pollution, industry and policymakers must urgently consider reforms to safeguard the future of space operations.