The satellite that woke up.
IMAGE was launched in 2000 and declared lost in 2005. It is still transmitting data beyond simple telemetry, indicating that some of its six onboard instruments may still be active. It’s possible the satellite turned back on during a period of time in which Earth’s orbit eclipsed its onboard solar panels, drained its batteries, and forced a reset of IMAGE’s systems. Per AmericaSpace, a Failure Review Board had concluded that an “induced ‘instant trip’ of the Solid Sate Power Controller” was likely responsible for the original outage, though they noted there was a small possibility of the SSPC resetting in 2007 or a subsequent eclipse.
“The odds are extremely good that it’s alive,” Rice University space plasma physicist and original mission co-investigator Patricia Reiff told Science.
The journal noted NASA is now looking to see whether it is possible to reactivate the satellite and its instruments entirely:
Since Tilley’s announcement, project scientists spent a couple days furiously digging up old software and records, and this weekend, NASA will attempt to contact IMAGE with its deep space radio antennas—as will the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland, and researchers at the University of California, Berkeley. Right now, the team is puzzled as to why it appears the spacecraft’s rotation rate has slowed, which may make communication more challenging. “The team is collectively holding their breath waiting for some real information exchange between IMAGE and the ground,” Reiff adds.