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In northern California, the SETI Institute has to shut down its systems because of wildfires near its telescope array.
Who better to deliver your greetings from space than Hello Kitty? The adorable cat happens to be on board a satellite and has been sending messages back to Earth.
Anomaly no more? Radio observatories in Australia and Puerto Rico have both now picked up brief bursts of radio waves from beyond our galaxy.
Speaking to Congress, two astronomers from SETI describe the chances of finding aliens as almost 100 percent.
Astronomers have long searched for life on other planets. But what happens when we find it? This e-book lays the groundwork.
A neuro-psychologist insists humans are so ignorant about the cosmos that any encounter with aliens would be a disaster.
Kepler-186f orbits an M dwarf star in the constellation Cygnus. More importantly, it's the first confirmed Earth-size, potentially habitable planet elsewhere in the universe.
Moments after exploding with the energy of an atomic bomb in the skies over the city of Chelyabinsk, the space rock quietly let itself into a lake outside of town, not far from the watchful eye of a security camera.
NASA has announced the discovery of 833 new Kepler candidate planets, with the latest findings suggesting the number could be in the billions.
Jill Tarter, who was the inspiration for Jodie Foster's character in "Contact," will lead the SETI Institute's fundraising. She talked to CNET about the alien hunt, and what she'd say to them.