Story perspectives

Satellite Collision Risk Hits 2.8 Days: Urgent Action Needed

12/17/2025

50 9

Summary

Story summary

The Collision Realization And Significant Harm (CRASH) Clock, introduced by a study, measures the risk of catastrophic satellite collisions in low-Earth orbit.
The CRASH Clock stands at 2.8 days, down from 121 days in 2018, indicating heightened risk from increased satellite density.
The study warns a sudden loss of collision-avoidance could trigger a chain of collisions and Kessler syndrome.
Researchers urge improved satellite management as SpaceX's Starlink expands its constellation.

1 of 1

Story summary

The Collision Realization And Significant Harm (CRASH) Clock, introduced by a study, measures the risk of catastrophic satellite collisions in low-Earth orbit.
The CRASH Clock stands at 2.8 days, down from 121 days in 2018, indicating heightened risk from increased satellite density.
The study warns a sudden loss of collision-avoidance could trigger a chain of collisions and Kessler syndrome.
Researchers urge improved satellite management as SpaceX's Starlink expands its constellation.