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.
Rocky planets that orbit a binary star system, like the fictional home of Luke Skywalker, were thought to be impossible, until now.
Among eight new Kepler planets found are the two most Earth-like to date, with possible conditions for the propagation of life.
The space agency is promoting some of the 1,000 planets discovered by the Kepler Mission in the style of vintage travel posters.