Comment on Mars may have had a giant ring billions of years ago, new research suggests

Mars may have had a giant ring billions of years ago, new research suggests

NASA/JPL The tilted orbit of one of Mars' moons was caused by the gravitational pull of a much larger moon that existed in the past, new findings suggest. That moon may have taken part in a phenomenon known as a moon-ring formation cycle. In that cycle, Mars pulled its moon so close that the moon got ripped apart, forming a giant ring.

 

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