Originally posted by CyranoAH
I believe there may be another civilizations out there, just too far in space OR time (theirs extinct before our signal gets there) to make contact.
Daniel
Agreed Daniel : *time* is the key : maybe civilisations or simple lifeforms existed someplace and are extinct, or there will be single cell organisms somewhere in a million years...
Anyways, if contemporary aliens have seen our Tv broadcasts, why would they ever want to contact us ??? to meet Jerry Springer and Rosie O'Donnell ?
so UFOs, yes, as *unidentified* flying objects, but they are natural phenomenons (lenticular clouds and the likes) or aircraft, secret or otherwise.
Many sightings are impossible to confirm so far, but I'm sure that many sightings from the cold war era can be blamed on Blackbirds, F117s, B2s and other hi-tech secret birds...