NASA Swift Observatory Re-enters Over Indonesia After Almost 22 Years in Orbit

NASA's Neil Gehrels Swift Observatory re-entered Earth's atmosphere on Wednesday, November 4, almost 22 years after its launch in 2004, NASA confirmed in an update to its official Swift blog.

The U.S. Space Force confirmed that Swift re-entered at 7:39 a.m. EST, 12:39 UTC, over the North Sumatra region of Indonesia, at about 3.4 degrees north latitude and 98.6 degrees east longitude. Reuters reported that the satellite came in at about 22 times the speed of sound, roughly 200 miles, or 322 km, north of the equator.

NASA said it expected most of the spacecraft to burn up as it traveled through the atmosphere, but that some components may have survived re-entry. Reuters reported that NASA reported no damage or injuries on the ground from falling debris.

A two-year mission that lasted almost 22

Swift launched on November 20, 2004, for a two-year prime mission and far outlasted that plan. The observatory, which weighed about 3,200 pounds, or 1,452 kg, was a 500 million dollar mission, according to Reuters. It was designed mainly to study gamma-ray bursts, the most intense blasts of energy in the universe, using three telescopes.

Over its working life Swift studied gamma-ray bursts, hundreds of supernova explosions, star-shredding black holes, stellar X-ray flares, asteroids and comets. Reuters reported that its work contributed to some 7,000 published scientific papers.

Swift ceased operations on October 20, 2026, and made its final observation that day from about 171 miles up, according to Spaceflight Now reporting of NASA data.

A rescue that did not work

The observatory had no propulsion system. It had been drifting toward orbital instability for months as increased solar activity hastened its descent.

In July, NASA and Arizona-based startup Katalyst launched a specially built rescue vehicle called LINK. The plan was for LINK to rendezvous with Swift, latch onto it and tug it to a higher orbit. LINK began spinning uncontrollably soon after reaching space. By mid-August, mission managers had abandoned the rescue effort.

Before re-entry, the Space Force had calculated the risk of harm to anyone on Earth as very low, at about one chance in 2,100. NASA had given the same figure, about 1 in 2,100, before re-entry.

NASA stated in its official update: "NASA expected most of the spacecraft to burn up as it traveled through the atmosphere, but some components may have survived re-entry."

Aerospace engineer Dean Sladen of Accu Components, in an email before re-entry reported by Reuters, said: "Satellites this size re-enter the atmosphere regularly, and in nearly 70 years of spaceflight no one has ever been killed by falling debris."