NASA is reporting that the MAVEN (Mars Atmosphere and Volatile EvolutioN) spacecraft, in orbit around Mars, experienced a loss of signal with ground stations on Earth on Dec. 6.
Besides studying the atmosphere of Mars, MAVEN serves as a comms relay station for rovers on the Martian surface such as Perseverance and Curiosity.
Other orbiters can pick up the slack for now. The rovers can also communicate directly with earth at low data rates.
https://science.nasa.gov/blogs/maven/2025/12/09/nasa-teams-work-maven-spacecraft-signal-loss/
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