LOS ANGELES — NASA's planet-hunting Kepler telescope is broken, potentially jeopardizing the search for other worlds where life could exist outs...

By: Mike Wall Published: 05/01/2013 10:01 AM EDT on SPACE.com Health issues are jeopardizing the planet-hunting work of NASA's prolific Kepler spa...

By Davide Castelvecchi and Nature magazine Mysterious dense bodies outside the Solar System could be the remnants of ice giants similar to Neptune t...

NASA's Kepler mission has identified 461 new planet candidates, the space agency announced today. Four of the planet candidates orbit in their sun'...

The best visualization for the flatness of planetary systems is that they are somewhere in between that of a pancake and that of a crepe. Gives food for thought next time you eat at your local IHOP.

Despite any inclination to believe yourself among the brightest bulbs around, new research indicates that even when the universe was considerably younger, there were heavy elements enough to spawn planets that could... spawn life.

MOFFETT FIELD, Calif. -- NASA has decided to keep its planet-hunting spacecraft running for several more years. The space agency said Wednesday the...

In a movie it's important to have aliens whose gestures and facial expressions can be "read" by humans. But come on! Are two eyes, four appendages and an upright posture really essential?

When I read last month that NASA's Kepler space telescope was allowing scientists to spy on a potentially habitable planet 600 light years away and co...

There are billions of planets in our galaxy, and a hot, Neptune-sized planet orbiting an ordinary star called SPH10066540 might not seem unusual, but ...

HONOLULU -- China and India are catapulting to the forefront of astronomy research with their decision to join as partners in a Hawaii telescope that ...

WASHINGTON -- The more astronomers look for other worlds, the more they find that it's a crowded and crazy cosmos. They think planets easily outnumber...