Conspiracies : Alien Abductions, conspiracies, conspiracy chat,...
Alien Abduction Survey : Find out if experiences that you have had, may have been alien abductions.
The SETI Institute : The Search for Extraterrestrial Intelligence. Are we alone in the Universe?
Mothership : One of the largest Paranormal/UFO websites in the world.
Area 51 : So what is really up with this place? This site has some theories (facts?).
Area 51 Research Center : This site has pretty much everything you wanted to know about Area 51.
exoScience UFO: Area 51 Pictures : Maps, signs, landscape, planes,...
The International Roswell Initiative : Information from the official Roswell, New Mexico website pertaining to the alleged Roswell "UFO crash" of July, 1947, from a more skeptical perspective.