An incredible photo shows Earth photobombing Mars' moon Phobos. It is the first time ever the two have been captured together from the surface of Mars. NASA's Curiosity Mars rover used its Mast ...

Astronomers used a computer to simulate the orbits of both Phobos and Deimos. The moons of Mars — Phobos and Deimos — are two fragments of what was once a much larger Martian satellite that ...