Overview
- The Neil Gehrels Swift Observatory reentered Earth’s atmosphere and largely burned up over North Sumatra on Wednesday, Nov. 4, at 7:39 a.m. EST, a U.S. Space Force tracking fix later confirmed by NASA.
- NASA expected most of the 1,450 kg spacecraft to disintegrate during reentry but warned that some dense components may have survived and estimated the chance of harm to anyone on the ground at about 1 in 2,100.
- Swift’s orbital decay was driven by recent high solar activity that expanded the upper atmosphere and increased drag on the telescope, which had no onboard propulsion to counter the descent.
- A last‑ditch commercial rescue by Katalyst Space launched the LINK servicing craft in July but LINK suffered propulsion and attitude control failures and never completed a capture, and Swift’s science operations were shut down after a final kill command on Oct. 20.
- The loss is prompting reviews of commercial on‑orbit servicing, debris‑risk planning and NASA solicitations for proposals to boost or service other aging observatories such as Hubble as agencies weigh technical limits, safety rules and human risk.