Swift Observatory Crashes Into Indonesian Atmosphere After Rescue Attempt Fails

The Swift Observatory reentered Earth's atmosphere at 7:39 a.m. ET on Nov. 4 over the North Sumatra region of Indonesia. The 1.5-ton spacecraft, which weighed approximately 3,200 pounds, plunged from orbit after months of attempts to save it failed. NASA confirmed that much of the telescope burned up during descent, though some components are expected to survive and may be scattered across different hemispheres.

NASA and the U.S. Space Force tracked the reentry path. The agency had predicted a reentry time of around 3:30 a.m. ET on Nov. 4, with an 11-hour window of uncertainty on either side. NASA stated that the risk of harm to people on Earth was unlikely, estimating the odds at about 1 in 2,100.

Swift was launched into low-Earth orbit 22 years ago to detect gamma-ray bursts and supernovas. It was named for its ability to swerve rapidly toward these events. Although initially designed for a two-year mission, the observatory continued operating until last month. Solar activity eventually dragged the spacecraft back toward Earth. In July, NASA contracted Katalyst Space to rescue the telescope. The company sent a three-armed robot named Link to push the observatory back into place. The robot encountered trouble shortly after launch and failed to get within seven miles of the target. Link fell back to Earth in September, and NASA decided in August to bring Swift down.

The telescope continued returning observations until late October. NASA shut down its systems when the spacecraft dropped too low to remain steady. Over its career, Swift observed more than 2,000 gamma-ray bursts and 1,400 exploding stars. It also acted as a first responder for the Hubble and Webb space telescopes, issuing alerts so those facilities could investigate findings more deeply.

John Nousek, an astronomer at Pennsylvania State University who led the control team, commented on the end of the mission. He stated that scientists have known this day would come since before Swift was launched. Nousek noted that in low-Earth orbit, what goes up must come down, and that end is catastrophic. He expressed hope that lessons learned from Swift's successes will be applied to new space missions.

NASA said in a blog post that Swift broadened the understanding of various cosmic objects. These include active galaxies powered by supermassive black holes, stars undergoing X-ray flares, and supernova explosions. The agency also noted that Swift monitored comets and asteroids within the solar system.