What a fantastic picture... this is not a mountain on Earth, but rather on Mars!

Call me crazy, but yes I have a real interest in the Mars rover 'Curiosity' that just landed Monday morning on the Red Planet.
Obviously I am not the only one...there is even an iPhone app for it! Why the interest? I am not expecting to see little green men with big eyes, but I do have a fascination with exploring another world. Mars may at one time have been very similar to earth, wetter, with creatures abound, albeit microbes.

How would things change if we found out for sure that we are not alone in the universe?