MontanaHatchet on 11 March 2009
NASA suspects that there is water on Mars so we can suspect that there's an alien civilization that we can suspect is so intelligent that they have built an entire civilization on a planet with no oxygen completely out of view of any our of probes. We can also suspect that this species is smart enough to travel to earth and be unseen, and that they would have no motivation to go other than to idly sift through earth, instead of say, sending a probe. There might be some incredibly basic organisms frozen in the ice, but they won't be alive anytime soon.
I suspect.
