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Astronomers think there's an undiscovered planet lurking in the far reaches of the solar system, and they're asking the public's help to find it.

Launch Complex 39A, the site of the Apollo 11 mission, has quite a storied past. Now, it's on the brink of a new era — but it'll have to wait a bit, after Saturday's launch was scrubbed for 24 hours.

NASA was looking for help from the public in solving a very specific challenge: How to deal with poop in a spacesuit. The winners included doctors, a dentist, a product designer and an engineer.

Starting Thursday, six people will spend eight months in a dome on Mauna Loa volcano to study what living on Mars might be like. The mission is co-sponsored by the University of Hawaii and NASA.

Global temperatures soared above the 20th century average last year, as the climate continues to change. It's the hottest it has been since scientists started tracking global temperatures in 1880.

NASA has just launched eight micro-satellites that will allow scientists to make better predictions about hurricanes. They deployed from a rocket that was launched from an aircraft.

NASA engineers are trying to figure out why a part of the rover's robotic arm keeps stalling just as it's about to drill into Martian rock.