NASA's Swift Observatory, a 3,200-pound space telescope launched in November 2004, is predicted to re-enter Earth's atmosphere and crash on Wednesday. The US Space Force forecasts the re-entry will occur around 3:30 a.m. ET, with a window of plus or minus 11 hours.
While most of the observatory is expected to disintegrate during its fiery descent, NASA scientists anticipate that some denser components, such as tungsten parts and mirror fragments, could survive atmospheric burn-up. The potential impact zone spans across every continent except Antarctica, though the risk to individuals on the ground is considered unlikely, with NASA estimating it at approximately 1 in 2,100.
A rescue attempt orchestrated by NASA a year ago, employing a robotic spacecraft named Link from Katalyst Space, ultimately failed. Link encountered issues after its July launch and could not reach the telescope, eventually re-entering Earth's atmosphere itself in September. Intense solar activity in recent years accelerated Swift's orbital decay, contributing to the need for the rescue attempt.
Launched to detect gamma-ray bursts and supernovae, Swift has made significant contributions over its nearly 22-year mission. The telescope's ability to rapidly swivel toward transient celestial events earned it the nickname 'first responder' for other observatories like Hubble and Webb. Its final tally includes over 2,000 gamma-ray bursts, 1,400 exploding stars, and observations of comets, asteroids, and black holes. Scientists are reportedly exploring how to fill the observational gap left by Swift's deorbiting.