The size and age of the observable universe suggests that there ought be other inhabited planets out there.
bacteria is highly adaptable and should be able to get a foothold somewhere other than earth. NASA has precautions in place to prevent interplanetary contamination.
Mathematically the odds are there are other planets with some form of life on.
It seems arrogant to believe that we (those born on earth) are the only lifeforms in all existence when there is so much we don't know. We've only just recently begun exploration outside of our planet, and not once (to my knowledge) have we looked beyond our galaxy. Even scientists theorise things such as alternate life forms and parallel worlds. There is both anecdotal and recorded evidence (though I admit both unreliable) as well as biological evidence of other life forms in the forms of cells and proteins which the scientists have discovered on meteorites.
I believe yes. Perhaps not the superficial little green men descending from a UFO surrounded by a celestial light, but in some form of life in the universe. I find it hard to believe that in the expanse of literally the entire universe, we are the only living things. Many planets similar to Earth have been discovered, and that is only in one tiny portion of the universe. Surely, other life forms, or aliens, are out there somewhere.
Our universe is so big. We have to entertain the possibility that we are not the only ones in this universe. Or are we?
heck yeah i believe in them.
I'll believe it when I actually see it in person and not just on the history channel! And even then, if aliens do exist, why haven't astronauts found any aliens on other planets besides Earth?
Aliens aren't real. We must move past this fantasy.
No, it is in a Holy Book that there is no life in or on another planet, meaning life on earth is the only possibility. Considering we have been trying to find life, for the longest and we have become an intelligent race, it most likely doesn't exist.