Thin layers of sedimentary rock in Mars’s Gale Crater suggest that the planet once had a moon much larger than the two that orbit it today, according to work to be presented at AGU’s Annual Meeting ...
A recent discovery suggests Mars may have once had a much larger moon, which could have caused tides in a lake that once filled Gale Crater. This intriguing possibility comes from a study of sediment ...
The Martian moon Phobos is locked in an orbital decay, gradually inching closer to Mars until it faces a destructive fate.