Phobos is the larger and innermost of Mars' two moons, and it's a fascinating celestial body. It's small, irregularly shaped, and orbiting just about 6,000 kilometers above the surface of the Red ...
The Daily Galaxy on MSN
Scientists discover evidence that Mars had a lost, massive moon 18 times bigger than Phobos
A recent discovery suggests Mars may have once had a much larger moon, which could have caused tides in a lake that once ...
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