A look back at NASA's planet-pinpointing space 'scope

The space agency says the Kepler space telescope is having equipment issues. With the mission threatened, we look back at Kepler's mind-expanding search for Earth-like exoplanets.

NASA/Ames/JPL-Caltech

NASA announced this week that a key piece of gear on its Kepler space telescope has run into trouble. And though the space agency hasn't given up on a jump-start, the mission may well be at risk.

It's already gone far beyond its planned duration, however, and presented us with many fascinating discoveries.

In this gallery, we take a look back at that mission -- at Kepler's intriguing quest to find Earth-like, life-friendly planets among the Milky Way's many stars.

Featured Video
6
This content is rated TV-MA, and is for viewers 18 years or older. Are you of age?
Sorry, you are not old enough to view this content.

The new Moto 360 looks more like a watch than a smartwatch

CNET's Dan Graziano gives you a first look at the brand new Moto 360.

by Dan Graziano