well technically with all the different bits of stuff in space like rocks, meteors, etc. there could be small organisms that are microscopic that could have landed on this planet we live on and actually evolved or just started living here too. so yeah. think for a second about that.
as following the logic in the hitchhiker's guide to the galaxy, there is no intelligent life in the universe. as the universe is infinite and not every planet has life, thus making it finite. Any finite number divided by infinity pretty much equals zero.
mezza-veritaFeatured By OwnerDec 15, 2011Hobbyist General Artist
I don't really care about these kind of things but, when I was about 8, I had this theory that every non-human thing on earth were actually aliens that came here because their planet became uninhabitable and Earth was the last planet in the universe that could sustain life.
How can there not be?!? There's a LOT of planets, there has to be at least one other that has people living on it! 8D But just like we can't build something to get to them, I'm guessing they don't have the technology to reach our planet either...so I don't believe that aliens will invade or aliens will visit earth XD