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NASA's Swift Observatory Set for Fiery Reentry
· Confirmed
In Short: NASA's Swift Observatory, launched in 2004, will end its mission with a fiery reentry after a failed rescue attempt.
NASA's Swift Observatory, launched in 2004, is set to end its mission with a fiery reentry after a failed rescue attempt. The spacecraft, designed to study gamma-ray bursts, has been in orbit for over two decades.
The Swift Observatory, which has been observing the cosmos for 22 years, is now falling uncontrollably towards Earth. NASA had hoped to rescue the telescope with a commercial spacecraft, but technical issues prevented a successful boost.
Swift, which was renamed the Neil Gehrels Swift Observatory in 2018, has made significant contributions to astronomy. It has observed more than 2,000 gamma-ray bursts and over 1,400 supernovae, contributing to approximately 7,000 scientific papers.
The telescope's orbit has been decaying due to atmospheric drag and recent intense solar activity. NASA had predicted Swift would remain above 185 miles (300 kilometers) until October, but the recent solar activity accelerated its descent.
A spacecraft commissioned by NASA to rescue Swift launched in early July, but by late August, technical issues made a boost attempt impossible. The Space Force is tracking the telescope’s dwindling path, predicting reentry on or around Friday.
Most of the 1 ½-ton telescope is expected to burn up in the atmosphere, but dense tungsten components and mirror parts could survive reentry. Any surviving wreckage will most likely plunge into the ocean.
Swift resumed observations once the rescue attempt was called off, discovering even more gamma-ray bursts and other ultrahigh-energy events. The mission's data has contributed to about 7,000 published scientific papers to date, according to NASA officials.
John Nousek, an astronomer who led the control team, said, “We’ve known this day would come since before Swift was launched. At least in low-Earth orbit, what goes up must come down. And that end is catastrophic.”
Lynn Cominsky, an astrophysicist, noted, “Almost immediately after launch, Swift started discovering things.” The telescope observed between five and 10 “targets of opportunity” most days, tallying hundreds or even thousands in a year.
Swift’s chief scientist, Brad Cenko, said, “Our fervent hope is that the lessons learned by the successes of Swift can be applied to new generations of space missions to accelerate our discoveries about the universe.”
What this adds
The Swift Observatory's reentry marks the end of a mission that has significantly advanced our understanding of gamma-ray bursts and other cosmic phenomena. The rescue attempt, while unsuccessful, highlighted the challenges and potential of satellite servicing in space.
Background
NASA's Swift Observatory, launched in 2004, is set to end its mission with a fiery reentry after a failed rescue attempt.
NASA's Swift Observatory, launched in 2004, will end its mission with a fiery reentry after a failed rescue attempt.
What's confirmed
- During more than 22 years, the Swift Observatory made itself indispensable This artist’s rendition shows NASA’s Swift Observatory in orbit around Earth.
- In its later years, Swift observed between five and 10 “targets of opportunity” most days, tallying hundreds or even thousands in a year.
- WASHINGTON — NASA has shut down an astronomy spacecraft in a decaying orbit after a failed attempt to reboost it with a commercial spacecraft.
- But a handful of pieces made of denser-than-lead tungsten and some mirror parts could survive reentry, according to NASA's Brad Cenko, the mission’s chief scientist.
- “Our fervent hope is that the lessons learned by the successes of Swift can be applied to new generations of space missions to accelerate our discoveries about the universe,” Nousek said in an email.
- “We’ve known this day would come since before Swift was launched. At least in low-Earth orbit, what goes up must come down. And that end is catastrophic,” said Pennsylvania State University’s John Nousek, an astronomer who led the control team.
- Swift resumed observations once the rescue attempt was called off, discovering even more gamma ray bursts and other ultrahigh-energy events.
- NASA hired Katalyst Space a year ago to mount a rush rescue.
- The Space Force is tracking the telescope’s dwindling path.
- Intense solar activity over the past few years dragged Swift down faster than usual.
- Space Force predicts the Swift Observatory will come crashing down on or around Friday.
- Its cosmic cremation has the Swift team mourning yet full of gratitude for the observations the telescope made during its 22 years in orbit.
What's still developing
- As Swift’s tenure unfolded, astronomers started asking to borrow the nimble observatory to study a whole range of objects changing on the sky.
- The X-ray Telescope aboard NASA’s Neil Gehrels Swift Observatory captured this image of Tycho’s supernova remnant on Wednesday, Aug. 26, 2026.
- NASA and Katalyst announced Aug. 19 that LINK would not proceed with capturing and boosting Swift.
- Katalyst sought to mount a similar mission to the 36-year-old observatory, and the Swift operation was meant to serve as a preview of that.
- Satellite servicing is a growing field, with government agencies and commercial companies around the world practicing high-flying maneuvers. (Tech billionaires are interested, too: Before he was appointed to the top job at NASA, administrator Jared Isaacman offered to mount a SpaceX mission to raise Hubble’s orbit.) “The technology to enable servicing is on a very good path,” says David Barnhart, an astronautical engineer at the University of Southern California in Los Angeles, citing advancements in rendezvous sensors, propulsion systems and, the all-important element, robotic arms.
- Use of the third instrument, the Burst Alert Telescope, was halted in April to reduce power consumption so Swift’s solar panels could be positioned to further reduce drag.
- NASA announced on October 23 that Swift had ended science operations after its orbit dropped too low for the spacecraft to reliably point its telescopes at astronomical targets.
- While intact fragments occasionally survive intense thermal loads, the overwhelming majority of the 1 ½-ton platform will simply burn into harmless ash across the upper atmosphere. 💬 Orbital mechanics give aging spacecraft very little margin for error once rescue attempts fail. ✨ Tracking teams will stay locked onto the Swift Observatory through its final orbital revolutions as it marks the end of its mission. 📱 Drop your thoughts in the comments below : Are you tracking this week’s satellite reentry, or did the news take you by surprise?
- "Roman is exactly the kind of success story we want to see across NASA," said NASA Administrator Jared Isaacman.
- Using the images from the NASA/ESA/CSA James Webb Space Telescope, astronomers have discovered 24 previously shrouded outflows from newborn stars in the ‘ Cosmic Cliffs,’ a region within the stellar nursery NGC 3324.
- The weird weather pattern didn’t show up in years of observations by NASA’s Cassini mission An image captured by the Hubble Space Telescope shows a 10-sided atmospheric wave surrounding Saturn’s south pole, as seen on August 29, 2025.
- Using Hubble along with telescopes at the Fred Lawrence Whipple Observatory and the Roque de Los Muchachos Observatory, the researchers detected repeating patterns in Betelgeuse’s behavior.