The U.S. Armed Forces have predicted that NASA's Neil Gehrels Swift Observatory will re-enter Earth's atmosphere in the early hours of November 4, specifically at 3:30 AM Eastern Time, with a time margin of error of up to 11 hours. This return comes 22 years after its launch, ending a distinguished career in exploring the depths of the universe and observing violent physical phenomena.
What went wrong with the rescue attempt?
This conclusion follows a final technical attempt by NASA to extend the observatory's life through the "Swift Boost" mission. The plan aimed to use the robotic vehicle "LINK" from the company "Katalyst Space" to dock with the observatory and pull it into a higher orbit to ensure the continuity of data collection. However, the mission faced a critical technical obstacle involving issues with the Attitude Control of the robotic vehicle, which led to it spinning uncontrollably in space and losing the ability to communicate effectively. This ultimately prompted the agency to cancel the mission and cease the observatory's operations in late October.
A scientific legacy in observing cosmic explosions
Despite the failed rescue attempt, the Swift Observatory left a massive technical and scientific mark over two decades. The observatory succeeded in detecting more than 2,000 gamma-ray bursts, the most powerful explosions in the universe. It also contributed to collecting data on 1,400 supernova explosions, in addition to observing asteroids, comets, and stars being consumed by black holes. The primary technical advantage of Swift was its ability to detect these rapid energetic flashes in real-time, which was not possible with such precision before its launch.
Risks of atmospheric re-entry
NASA explained that most parts of the observatory, which weighs approximately 3,200 pounds (equivalent to about 1,450 kg), will vaporize due to intense friction during atmospheric entry. Although there is a possibility that some components may survive and fall to Earth, the agency and the Armed Forces confirmed that the risk of anyone being struck by these fragments is extremely low, with continued monitoring of the descent path to update temporal and spatial predictions accurately.