We might have an answer to what happened to MAVEN... well partially.
One of the bits of that we were able to confirm is an inertial rate measurement that told us the spacecraft was spinning at about 2.7 revolutions per minute. We also confirmed that that was consistent with a Doppler signature that we saw in the data. That’s faster than the spacecraft is expected to rotate, and that indicates a problem that the spacecraft probably couldn’t recover from.
Without the ability to point its solar arrays toward the Sun, the tumbling spacecraft likely drained its batteries within hours.
That was one of the data points that helped us understand that the spacecraft probably reached a power state that was not supportable to continue operations. Those are the facts that we know. The anomaly review board is still looking at the root cause of what actually initiated the failure.
https://arstechnica.com/space/2026/06/after-11-years-at-mars-nasas-maven-spacecraft-went-out-with-a-whisper
Sources:
1 - Like 'the loss of a loved one': NASA's Mars orbiter MAVEN is officially dead after months of radio silence
2 - NASA's dead Mars orbiter MAVEN will crash into the Red Planet in the next 100 years. It's not the only probe in the Mars morgue
Farewell, MAVEN 2014-2026
#Mars #MAVEN #probe #orbiter #Space #NASA #Science