How the Density of Exoplanets' Atmospheres Weighs on the Odds for Alien Life
by Adam Hadhazy for Astrobiology Magazine
Moffett Field CA (SPX) May 03, 2013
At this early stage in the search for extraterrestrial life in our solar system and beyond, the emphasis is on liquid water. Where it can exist on a planet's or moon's surface, so the thinking goes, life as we know it has a chance. [Read more] ...