Well mars is the most studied planet in our solar system. And mars is an active body. So just because of this mars-quakes like earthquakes hit mars and they are unlike that on earth. And the two satellites may also vanish from its parent planet. The Phobos is hurdling towards mars and in some millions years from now it will slam into mars . And deimos is moving away from its parent planet. It will flung out of mars orbit. And mars will be moon less.