NASA Ends Swift Mission After 21 Years as Observatory Nears Re-entry at 275 Kilometers
Updated
Updated · Interesting Engineering · Oct 31
NASA Ends Swift Mission After 21 Years as Observatory Nears Re-entry at 275 Kilometers
3 articles · Updated · Interesting Engineering · Oct 31
Summary
October 20 marked Swift’s final observation at about 275 kilometers above Earth, and NASA ended science operations days later after the spacecraft entered safe mode.
Increased solar activity expanded the upper atmosphere and boosted drag, dropping Swift’s orbit too low for it to reliably point at astronomical targets.
A July 3 rescue attempt by Katalyst Space Technologies’ LINK spacecraft failed after an attitude-control problem blocked the planned capture and orbit raise; NASA scrapped the boost in August.
Launched in 2004 for a 2-year mission, Swift lasted more than 21 years and logged over 2,000 gamma-ray bursts, more than 1,400 supernovas and the 2022 BOAT event.
Its scientific afterlife will continue through a 12-terabyte public archive—more than 1.5 million images and data behind about 7,000 papers—even as NASA looks for new rapid-response capabilities.