Discovery: Do Astronomers Believe in Extraterrestrial Life?

The scoop: Believing that intelligent extraterrestrial life -- better known as alien life -- exists is one thing.
Believing that they have visited Earth in our short time on the planet is another. Astronomer, author and blogger Phil Plait explains. Full story:

http://dsc.discovery.com/space/my-take/astronomer-alien-phil-plait.html

* Nasa Ufo Pictures, Real photos of ufos from Nasa:
http://cristiannegureanu.blogspot.com/2008/12/nasa-ufo-pictures-real-photos-of-ufos.html
* APOLLO ASTRONAUTS SPEAKS ON UFO:
http://cristiannegureanu.blogspot.com/2008/11/apollo-astronauts-speaks-on-ufo.html
* TOP SECRET UFO NASA TAPES:
http://cristiannegureanu.blogspot.com/2008/10/top-secret-ufo-nasa-tapes.html