Dear 100 Hour Board,
Do you know some resources which document the existence of lifeon other planets?
custom dissertation hypothesis
Dear Theory Query,
It seems that this question is one of NASA's FAQ's.
I would imagine that if we had any evidence, it would be because we had observed a planet near ours that showed signs of life or that we had actually found it. I think that if we had found any signs of life on other planets, it would be on Mars; however, though the methane levels and conditions on Mars suggest that there might be or have been methanogens on Mars, we have found no concrete evidence to put it one way or another.