NASA's Swift Observatory expected to re-enter Earth's atmosphere

NASA's Neil Gehrels Swift Observatory is expected to re-enter Earth's atmosphere around November 4, 2026. The 3,200-pound spacecraft, which launched on November 20, 2004, has been used to study gamma-ray bursts and other cosmic events.

Reentry Projections and Risks

Estimates for the exact time of reentry vary among agencies. An estimate from the nonprofit Aerospace Corporation placed reentry at 5:19 a.m. ET, plus or minus two hours. A more recent US Space Force projection predicted reentry for 7:42 a.m. ET with the same margin of error. EarthSky reports a current estimate of November 4, 2026, at 10:19 UTC ± 2 hours.

NASA predicts that while most of the spacecraft will burn up in the atmosphere, some pieces may hit the ground. "The risk of harm coming to anyone on Earth is unlikely, approximately 1 in 2,100," NASA said in a statement.

NASA anticipates debris could land in a band between 20.6 degrees south latitude and 20.6 degrees north latitude. This area includes parts of:

• Central and South America
• Central Africa
• Southern India
• Southeast Asia
• Northern Australia
• Vast stretches of ocean

Failed Rescue Mission

Earlier this year, an attempt to extend the observatory's lifespan failed. Arizona-based Katalyst Space Technologies launched the LINK spacecraft in July 2026 to grapple the Swift Observatory and boost it into a higher orbit.

However, the mission was unsuccessful. On August 19, 2026, NASA announced that "due to an ongoing commercial spacecraft attitude control issue, NASA and Katalyst Space announced Wednesday the LINK spacecraft will not capture or boost an agency satellite to a higher altitude to extend its science mission as planned."

According to EarthSky, the LINK spacecraft experienced attitude control issues after two of its three reaction wheels failed, causing the satellite to enter an uncontrolled spin.

Orbital Decay and Future Missions

The spacecraft's descent was hastened by increased solar activity. Intense flares and coronal mass ejections caused Earth's atmosphere to expand, increasing drag on the observatory. NASA stated, "At this point, the spacecraft was no longer able to compensate for the effects of the increased drag and entered safe mode."

Following the failed rescue, a team of researchers at Penn State sent the final kill-switch command to Swift on October 20.

Despite the loss of Swift, NASA has expressed interest in similar lifeline-extension missions for other instruments. According to a Request for Proposals (RFP) issued by NASA, the agency is seeking commercial solutions to boost or service the Hubble Space Telescope, which has a 10% chance of deorbiting by 2032 and a 50% chance by 2033.

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Sources

• sg.news.yahoo.com: A 3,200-pound NASA observatory is careening back toward Earth. Here’s what to know - Yahoo News Singapore
• earthsky.org: Swift spacecraft fiery reentry expected within the next 24 hours

This article was drafted with AI assistance and checked against the sources above. Company claims are reported as claims. Cover image is AI-generated.