Phobos Will Be the Next Victim of Moon-Killing Mars

Martian moons Phobos and Deimos may have once had a lunar sibling. The discovery of a pair of elliptical craters on Mars’ surface have led astronomers to speculate that a small moon may have held an unsteady orbit around the planet, only to be dragged down by Mars’ gravity and destroyed. And one thing is for certain:… » 10/26/08 8:00am 10/26/08 8:00am