The answer to whether or not we are alone in the universe could be right under our nose, or, more literally, inside every cell in our body. ->

A recent study suggests that most of the galaxy's terrestrial planets may orbit red dwarf stars -- could there be alien life on any of these worlds? ->

Building a huge radar system to bridge vast interstellar distances may not be such a silly idea. ->

Forget hunting for organic chemistry inside rocks on Mars or complex organisms in Europa's sub-surface oceans, the Cosmos has just FedEx'd some extraterrestrials direct to our door! Or not. ->

The discovery of magnesium sulfate salts in Europa's ice is further evidence that suggests minerals are cycling in and out of the sub-surface ocean. ->

Research suggests that it is unlikely we'll be attacked by renegade aliens. That's a relief. ->

In an effort to search for intelligent extraterrestrials, SETI astronomers have completed their first "directed" search using Kepler data. ->

When you're at the polls this November, there's one more issue to consider beyond health care, immigration and jobs: Who is best to lead the nation in the event of an alien invasion? Sixty-five percent believe that would be Barack Obama, a National Geographic Channel poll found. The network commiss...