A Smashing New Theory About Mars’ Moons

For years, astronomers have been trying to determine the origin of Mars’ moons Phobos and Deimos. The long-standing argument that they were captured asteroids may fall by the wayside in lieu of a new theory.

The biggest factor working against the asteroid theory is that the shape and trajectory of both moons’ orbits contradict the asteroid theory, but in two new studies it is shown that they may have been created from a giant collision. Researchers from the National Center for Scientific

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