Wonderful picture of Phobos
According to APOD (I agree by the way)… Phobos is doomed, it orbits very close to Mars – about 5,800 kilometers above the surface compared to 400,000 kilometers for our Moon!! This means that the tidal forces are dragging it down and due to this stress it is likely to cause it to shatter, in 100 million years or so!
The reason I post this, well look at the fantastic photo that has been released of this object:
Credit: HiRISE, MRO, LPL (U. Arizona), NASA
For more and a larger image see: [APOD]