
Were Phobos and Deimos Once a Single Martian Moon That Split up? Not Likely, says New Study - Universe Today

A new study has cast doubt on the theory that Mars' moons Phobos and Deimos were once a single moon that split apart.
The origin of Phobos and Deimos, the two Martian moons, has been a mystery to astronomers. These two bodies are a fraction of the size and mass of the Moon, measuring just 22.7 km (14 mi) and 12.6 km… [+7471 chars]
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