I'd be hesitant to attribute any sort of hypothetical causes, but it's fun to also consider such scenarios when thinking just one rock a bit further out. Mars w

I'd be hesitant to attribute any sort of hypothetical causes, but it's fun to also consider such scenarios when thinking just one rock a bit further out. Mars was at one time a warm, watery planet not dissimilar to Earth. It's going to be extremely interesting once we get feet on the ground and can start really digging into the planet's past, quite literally. Most tantalizing of course is that it seems to have had all that was necessary to see the development of life. In many ways even finding absolutely no evidence of life at all will be as exciting as finding the opposite. Okay definitely not as exciting, but it'd certainly be really quite interesting!