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After 22 years of watching the universe's most violent explosions, NASA's Neil Gehrels Swift Observatory has come home the hard way. The 3,200-pound (1,452 kg) telescope tumbled out of orbit on Wednesday 4 November 2026 and burned up over Indonesia, the US space agency reported, with no damage or injuries reported on the ground.
Related reading: NASA's Swift Telescope Is About to Fall Back to Earth After Its Rescue Failed.
What Swift was built to do
Launched on 20 November 2004 for what was supposed to be a two-year mission, Swift was a first-of-its-kind multi-wavelength observatory, carrying three telescopes to study gamma-ray bursts — the most intense blasts of energy in the universe, coming from the cores of distant galaxies. It cost about $500 million and far outlived its design life.
In 22 years it observed more than 2,000 gamma-ray bursts and about 1,400 supernova explosions, along with stars being shredded by black holes, stellar X-ray flares, asteroids and comets, according to Smithsonian Magazine. Its observations contributed to some 7,000 published scientific papers, Reuters reported — a record that explains why astronomers called it "beloved" rather than merely old.
Why it fell now — and why the rescue failed
Swift had no propulsion system of its own, and unusually strong solar activity in late 2024 pulled it down faster than expected. NASA contracted Arizona-based Katalyst Space Technologies to build a robotic spacecraft that would use robotic arms to lift Swift back into a higher orbit. The rescue craft, LINK, launched on 3 July 2026, but the first-of-its-kind mission failed when the craft had problems with its orientation control system, among other issues, and it later re-entered on 25 September.
Swift kept working after the rescue was called off, but by late October it had dropped too low to stay steady, and NASA shut it down on 20 October. From there, re-entry was a matter of time, not choice.
The final plunge
The US Space Force confirmed re-entry at 7:39 am EST (1239 GMT) on 4 November, as Swift streaked into the upper atmosphere at about 22 times the speed of sound over Indonesia's North Sumatra province, roughly 200 miles (322 km) north of the equator. Most of the spacecraft burned up; a few pieces made of tungsten and some mirror parts could have survived, but NASA said any surviving fragments were most likely to land in the ocean.
Before re-entry, NASA put the odds of harm to anyone on Earth at about one in 2,100 — low, but not zero, which is why the re-entry corridor, between 20.6 degrees north and south latitude, was watched so closely. In the end, the telescope that spent two decades catching the universe's brightest flashes ended in a flash of its own.