'Mars rat' spied by NASA's Curiosity rover
foxnews.com
foxnews.com
My opinion on the picture is probably the common one her. It's a rock.
I'm not sure what's going on here, but I think it's pretty funny.
Again, a huge benefit of having people there would be to walk over and look at it. In the mean time it would be nice to develop robotic technology that you could rely on to go check something out, without risking having it becoming stuck in a pocket of sand.