NASA reports the end of Swift observatory operations

NASA reported on 23 October that operations of the Neil Gehrels Swift Observatory have concluded. The spacecraft, which studied gamma-ray bursts and other cosmic targets, is expected to re-enter the atmosphere in the coming weeks.

The agency attributed its rapid orbital decline to increased atmospheric drag associated with solar activity. Swift reached about 275 kilometres on 20 October and entered safe mode; the operations team subsequently sent a command effectively ending operations.

The fresh report is dated 23 October, while the orbital sequence it describes began earlier. The source does not establish that re-entry has already occurred or provide a confirmed exact re-entry time.

Ending spacecraft operations does not remove the observations already collected. Analysing that archive remains a separate scientific task; the present milestone concerns shutdown and preparations for orbital re-entry.

Primary source: https://science.nasa.gov/blogs/swift/2026/10/23/nasas-swift-mission-ends-ahead-of-re-entry/.

Cover: official archival Swift visualisation, NASA’s Goddard Space Flight Center/Chris Smith (KBRwyle). Image source. NASA media guidelines.