TIMED / Cosmos 2221 near-miss (February 2024)

On 28 February 2024, NASA's active TIMED science satellite and the defunct Russian Cosmos 2221 passed extremely close to one another — by NASA's estimate within a few tens of meters — in one of the more widely reported near-misses in recent years.

Neither could move The unsettling part was that neither object could maneuver: TIMED has no propulsion to dodge, and Cosmos 2221 is long dead. The two simply had to pass and be tracked. Had they collided at orbital speed, the result would have been a major debris cloud in a busy region used by many other satellites.

Why close approaches matter Conjunctions like this happen constantly and are usually resolved by an operator nudging an active satellite out of the way. Cases where both objects are uncontrollable highlight the long-term hazard posed by the growing population of dead satellites and spent stages that can never be steered again.