Phobos
From Slackerpedia Galactica
Phobos is one of the satellites (moons) of the planet Mars. Its name means "fear" or "fright." It is the larger of the two Martian satellites (Deimos being smaller).
Phobos orbits Mars in just over seven Martian hours. However, this is not a set period, as Phobos is slowly being drawn in towards Mars, and will one day impact its surface.
It is supposed that Phobos is a captured asteroid.
