NASA’s Kepler mission Monday announced the discovery of 461 new planet candidates. Four of the potential new planets are less than twice the size of Earth and orbit in their sun’s “habitable zone,” ...

PASADENA, Calif. — NASA’s Kepler mission to seek other Earth-like planets is undergoing final preparations for liftoff Friday, March 6, from Pad 17-B at Cape Canaveral Air Force Station in Florida.

NASA’s Kepler Space Telescope has run out of fuel, and its mission has come to an end 94 million miles from Earth, the agency announced Tuesday. The deep space mission’s end is not unexpected, as low ...

NASA’s Kepler mission confirmed the discovery of its first rocky planet, named Kepler-10b. Measuring 1.4 times the size of Earth, it is the smallest planet ever discovered outside our solar system.

NASA’s Kepler mission has been approved for extension through fiscal year 2016 based on a recommendation from the agencys Senior Review of its operating missions. The extension provides four ...

With no service station in sight, the Kepler spacecraft has run out of fuel and will retire, ending the most successful planetary-seeking mission in history. Managed by NASA Ames Research Center ...

Astronomers using data from NASA’s Kepler mission have discovered the three smallest planets yet detected orbiting a star beyond our Sun. The planets orbit a single star, called KOI-961, and are 0.78, ...

If you've ever read about exoplanets — that is, planets outside our solar system — you've likely come across a particular name: Kepler. You'll find exoplanets with names like Kepler-452b or Kepler-4b, ...

NASA's prolific Kepler space observatory, which has found signs of thousands of alien planets, will keep hunting strange new worlds for at least four more years, the space agency announced Wednesday ...