Giant Mars crater could explain the past of a doomed moon

A massive impact crater on Mars might finally solve the mystery of where the planet's doomed moon came from. Scientists studying the Red Planet have found that this huge pit on the Martian surface holds vital clues about how the moon Phobos formed long ago. Phobos is slowly moving closer to Mars every day and will likely break apart in the future. Researchers hope that studying the materials exposed inside this giant crater will reveal if the moon is actually a captured asteroid or a piece of Mars that broke off after an ancient collision. This new study helps scientists understand the history of our solar system and the strange orbits of the two moons that circle Mars.