New research contends that the Milky Way alone is flush with billions of potentially habitable planets -- and that's just one sliver of the universe.
In a distant solar system, water-soaked chunks of rock that contain two of the key elements of a habitable planet have been spotted for the first time.
The space agency is giving up on restoring its planet-hunting spacecraft to full operational capability, but that doesn't mean the mission is over just yet.
European astronomers discover the closest-known exoplanet found so far, and it comes with a few surprises. Like, it's a little warmer than our planet.
In a long-awaited milestone, astronomers using a NASA space telescope have found a roughly Earth-size world, Kepler-22b, orbiting around a sun-like star where conditions may be favorable for life.
How close are we to finding alien life? CNET contributor Boonsri Dickinson visits Geoff Marcy's lab at the University of California at Berkeley to hunt for Earth-like planets. Using the Keck telescope in Hawaii and data from the Kepler telescope, Marcy can detect planets millions of miles away.
A Friday evening launch will send the Kepler spacecraft out into the Milky Way on a mission to discover places that might support life as we know it.
Technically Incorrect: Building on the principle of evolutionary convergence, an academic says it's likely that aliens will resemble us.
In the "Star Trek" universe, humans made contact with aliens in 2063. In the real world, scientists could beat that mark by decades, at least when it comes to detecting signs of life beyond this rock.
There's reason to believe that other planets might be better for supporting life as we know it, and they might not even be that far off, cosmically speaking.