Aldrin is a bit of a tool so anything he has to say (and over the years he has had plenty to say) is not all that more important than anyone else's half-assed opinions including mine.

Hell folks.......Let's really think this thing through.........Too many probab;e places in the universe for some type of life form not to exist somewhere and no reason to believe they aren't a million times more advanced than we are and have been out and about roaming the galaxies even before the earth was fully formed.

And why would you think they have to be a carbon based life form? Even if the DNA model applied to them, perhaps they had 4 or more different Amino Acids and the life produced was nothing at all like ours.

Considering the above possibilities, then is it not also possible that they are here right now but that as their life form is so different, we are not capable of recognizing them......nor they us?

I'm going to go off and scratch my nuts for awhile.

Spaw