NASA’s Kepler spacecraft is critically damaged, threatening to prematurely end the world’s most successful planet-hunting mission. The second of four reactor wheels that point the telescope ...

The Kepler spacecraft is in the final moments of its life. NASA isn’t quite sure when they’ll say their last goodbye to the space telescope which has confirmed the existence of thousands of ...

A new set of data released by NASA's Kepler mission catalogs 219 newfound alien planet candidates. According to NASA, 10 of the new worlds appear to be rocky in the habitable zones of their stars ...

(CNN)-- Calling it a mission that may fundamentally change humanity's view of itself, NASA on Friday launched a telescope that will search our corner of the Milky Way galaxy for Earth-like planets.

Kepler's original mission involved staring at a relatively small patch of sky and hunting for exoplanets in orbit around stars in that specific area. But Kepler's mission changed a few years ago ...