Posted by Ray Villard Tue Feb 7, 2012 11:17 AM ET | 0
One solution to the Fermi Paradox is that there are "green aliens" that have reached a Utopian state of being in balance with nature by not generating waste products -- and are therefore undetectable. Read more
Posted Mon Feb 6, 2012 04:42 PM ET | 0
Guest contributor Pat Galea discusses how a starship may transmit signals across the light-years between the stars. Read more

Posted by Ian O'Neill Fri Jan 6, 2012 02:34 PM ET | 0
The search for alien signals on Kepler's exoplanets has turned up its first results -- sadly, the signals are not alien. Read more
Posted by Ian O'Neill Tue Dec 27, 2011 12:48 PM ET | 0
Although SETI has been scouring the skies for a signal from an intelligent alien civilization, perhaps a closer look at the lunar surface may uncover some alien artifacts. Read more
Posted by Ian O'Neill Mon Dec 5, 2011 01:52 PM ET | 0
With the help of NASA's Kepler space telescope, the Search for Extraterrestrial Intelligence (SETI) has some new "Earth-analog" targets. Read more
Posted Tue Nov 8, 2011 09:08 AM ET | 0
Explore how aliens might stumble upon our planet -- and how we might spot them first. Read more

Posted by Jesse Emspak Wed Nov 2, 2011 11:42 AM ET | 0
Forget radio signals, intelligent aliens could be found by looking for their streetlights. Read more
Posted Mon Oct 31, 2011 08:00 AM ET | 0
This photo could be the colors of the iridescent mother of pearl found inside an oyster shell -- but it's certainly not of this planet. Read more

Posted by Irene Klotz Thu Sep 15, 2011 02:01 PM ET | 0
For the first time, an alien world has been discovered beyond the solar system circling two married stars. Read more

Posted by Ian O'Neill Mon Sep 12, 2011 04:34 PM ET | 0
Astronomers have announced the discovery of 50 (yes, five-zero) exoplanets, the largest group of alien worlds announced at one time. Read more
Posted by Ray Villard Mon Sep 12, 2011 11:32 AM ET | 0
Desert-like terrestrial planets may be great places to buy real estate, and there are probably lots of them to choose from in our galaxy. Read more
Posted by Benjamin Radford Wed Sep 7, 2011 06:20 PM ET | 0
The mystery of one of the most convincing pieces of UFO evidence has now been solved. Read more
Posted by Ray Villard Wed Sep 7, 2011 12:59 PM ET | 0
Like us, alien scientists may be realizing that we just happen to be living at a singularly unique nexus in the universe’s history. Read more
Posted by Irene Klotz Wed Aug 31, 2011 04:51 PM ET | 0
Scientists hoping to develop a common language with dolphins may help us talk to extraterrestrials. Read more

Posted by Ian O'Neill Thu Aug 18, 2011 05:11 PM ET | 0
As we push deeper into space, will we be seen as a threat? If so, would an advanced alien race consider a preemptive strike? Read more
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