they were first on earth
Scientists don't know yet.
Scientists rarely think about aliens, they're too busy thinking about science and scientific things.
Aliens, as people know, are living beings outside of the Earth. Scientists have not even discovered bacteria outside of the Earth ( as far as I know). So I don't think aliens can breath underwater, maybe in science fiction movies, but not in real life.
no never not whatever the answer is no.
NONE!!! only bacteria as so proved... from what scientists know, there are no aliens on mars. but aliens could exist, but i guess this is the question most of us always come back to... aaaah, boraat like
Aliens
aliens doesn't exist its just an imagination of scientists really i dont believe in these things
yes. we think other species are aliens because we dont know what they are. maybe aliens dont know about us and think we are aliens.
Area 51 is the myth, where supposedly yes, aliens were captured and studied by scientists in some sort of bunker that no one knows about. I will tell you this though that it is a bunch of bologna. For those of you who think aliens are here. You can forget about it if they are smart enough to know how to travel to earth from so far, then they should know enough not to get captured.
Scientists have not seen an alien, so there is no proof of which color they are.
I don't know but there are no such things as aliens
There are no aliens. If there were we would surly know where they were.