Mars is going to get rings! One of its moons is going to collide with the planet, get crushed to dust, and form rings!
...in several million years.
Oh, well, until then I guess I can geek out over the fact that 1) all the terrestrial planets do, in fact, have water in some form on them and 2) there is, in fact, a giant cloud of water just chillin' next to a black hole.