The government could not keep a secret like that. I definitely believe there is life outside of our planet but I don't know about intelligent life. Odds are if there is something intelligent enough to build crafts that can make it to your planet we would know about them. I doubt aliens would come from the other side of the universe only to tease certain people with glimpses of their ships and themselves.
It'll be a while before we can generate a supernova type energy source that could tear through space...I really don't think we should even try to look for other life forms. What if we actually find we we're searching for?
According to quantum theory, aliens landed and didn't land, the government knows and doesn't know, the government leaked the information out to the public and didn't leak anything, and the people panickned and didn't panic.
Astronauts have said they "have the Alien's in sight". Tons of eye witness accounts, etc. More than God. DD
Actually, they haven't said they see aliens. They say they've seen UFO's, which by definition are unidentified flying objects. I know of exactly 0 instances when astronauts have seen an alien and identified it as such.
I think the quote was "We still have the Alien craft in sight" then they switched to a scrambled frequency...I will see if I can find it. DD
Oh, so when you said "evidence", you meant unsubstantiated speculation that says nothing one way or the other about the actual existence of extraterrestrial life on earth. Lots of people have seen Jesus in their morning toast, too.
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And according to quantum theory Obama lost the election, healthcare reform has been passed and Steve Francis is still playing for the Rockets.