- last post: 01.01.0001 12:00 AM PDT
Agree with all the other responses and my extra reply:
It is highly unlikely that there are aliens on mars due to the highly inhospitable nature of the planet. It has virtually no atmosphere, little water, is extremely cold, and frequently has very severe dust storms.
Oh, and the chanes of any virus making it back, if they even exist on mars, are slim. They would be noticed and usually such things would be quaratined for a while (i belive the first moon astornauts were in case of such problems).