I believe there are single celled organisms in space because that's been proven but I keep an open mind when it comes to Aliens.
Most Helpful Guy
Nope. If there were aliens then either there technology would be so high that we wouldn't know there were here (any civilization that can travel between stars would be vastly more advanced than us - think a fully armed aircraft carrier versus the ROmans - no contest, no comparison) OR they would let us know they were here unequivocally. So - they're not here.0