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The NASA Swift telescope will re-enter Earth's atmosphere in the coming weeks, concluding a nearly 22-year mission that revolutionized our understanding of cosmic explosions. The agency confirmed the re-entry will be uncontrolled, though it deems the risk to human life negligible as most of the structure is expected to disintegrate.
Swift performed its final observation on October 20 while orbiting at an altitude below 275 kilometers. At this height, atmospheric drag prevents the telescopes from maintaining stable targets, making continued operation impossible . In August, NASA and Katalyst Space abandoned plans to use the LINK robotic spacecraft to capture Swift and boost its orbit, rendering the uncontrolled fall inevitable .
Launched in November 2004 for a two-year mission, Swift operated far beyond expectations. Its key achievements include:
Due to its orbital inclination, debris could land in a band stretching from central Mexico across South America and into oceanic regions . Swift leaves behind a public archive of 12 terabytes containing over 1.5 million images. NASA is now evaluating how future missions can replicate Swift’s rapid response capabilities to cosmic phenomena .