posted on Nov, 2 2005 @ 07:05 PM
Here's my theory: Aliens are the survivors of ancient earth civilizations. The earth was rendered inhabitable by (pick one): ice age, great flood,
nuclear war, disease, near pass of Planet X, asteroid strike, etc. and there were some who survived by fleeing to (pick one): the moon, a nearby
planet, deep underground, under the sea, etc. in vehicles that we now think are "space ships" or "flying saucers".
Of all the theories I have heard, I feel this one is something that could be believed by everyone. It does not require a leap of faith to defy
physics, such as is required in believing that another race has somehow figured out how to travel across the vast distances between stars, or has
figured out how to travel back through time.