Mission background
Launched in 2004, the Swift telescope has been monitoring high‑energy events such as gamma‑ray bursts from low‑Earth orbit. After more than two decades, its orbit is decaying, raising the risk of an uncontrolled atmospheric entry.
Decision to intervene
Assessments of remaining propellant and structural health led NASA to approve a rescue maneuver aimed at stabilising the satellite’s trajectory and extending its scientific use.
Technical approach
A service module already in orbit will perform a rendezvous and docking with Swift. A small thruster will then fire to raise the spacecraft’s velocity and altitude, compensating for orbital decay. Precise navigation is essential given Swift’s limited manoeuvring capability.
Risks and timeline
The operation carries significant uncertainties: incomplete telemetry, potential damage to solar arrays, and a narrow window before the predicted re‑entry. NASA intends to complete the critical burns within the next two weeks.
Future prospects
If successful, Swift’s operational life could be extended by several years, preserving valuable astrophysical observations. The mission will also provide practical experience for future satellite rescue efforts in low‑Earth orbit.