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NASA’s Swift Observatory Is Falling to Earth. Here’s What to Know About the Impending Impact

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NASA’s Swift Observatory Is Falling to Earth. Here’s What to Know About the Impending Impact

After 22 years in orbit and a failed rescue mission this summer, it is highly likely that the Neil Gehrels Swift Observatory will crash into Earth sometime next week. It is not known where on the planet the spacecraft—which is roughly as big as a large elevator—will fall. Despite its size, experts say the risk to the public is relatively low.

What is now a useless piece of space junk was for a long time extraordinarily valuable to the scientific community. Launched on November 20, 2004, Swift was a space observatory equipped with three telescopes. It was designed primarily to detect and study gamma-ray bursts, which are among the most energetic explosions in the universe. Swift would locate these events and transmit their positions to observatories around the world for further study.

The observatory was designed to operate for a few years in low Earth orbit, but it far exceeded its expected lifespan, helping to make many important discoveries about the evolution of the cosmos, including the study of supernovas and the destruction of stars by black holes. However, in 2024, increased solar activity heated and expanded the upper layers of Earth’s atmosphere, increasing the drag on the satellite and accelerating its descent. Without a propulsion system capable of correcting its orbit, its days were numbered.

In July 2026, NASA launched a special $30 million mission to rescue Swift. A robotic spacecraft called LINK was supposed to drag Swift away from Earth by 150 miles, giving it a higher orbit and thus extending its operational life.


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