Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
Her husband, Mark Kelly, is commander of the Endeavour mission due for lift-off on April 19 on what is scheduled to be NASA's final shuttle flight.
Don't expect cuddly, squishy E.T.s to come calling someday; instead, picture robots descending from the sky.
The museum where Discovery will spend its golden years will be announced on April 12.
Astrophysicist Stephen Hawking and former astronaut Buzz Aldrin are teaming up to develop and promote a unified vision of how humanity can continue to expand its presence in space.
Endeavour will move to launchpad shortly after Discovery lands on March 10.
Astronauts woke up to 'Blue Sky', a song inspired by the Discovery shuttle's flight following the shuttle Columbia tragedy.
Budgetary woes leave NASA attempting to prioritize missions for the next decade.
For the decade 2013-2022, five panels of scientists agreed on a suite of missions that would get the greatest scientific return from money spent.
What on Earth? These photos give a small glimpse of the captivating beauty of our planet.
Scientist calls the double sun a mirage — albeit one that is difficult to explain with science.
A NASA scientist reports detecting tiny fossilized bacteria on three meteorites, and says the microscopic life forms are not native to Earth.
NASA allowed people to vote on which classic space tunes would wake up Discovery astronauts on the shuttle's final voyage.
Files include reports from citizens, police officers and even military officials who all claim some sort of UFO contact.
NASA said a protective covering on the Taurus XL rocket did not separate as planned three minutes after launch at 5:09 a.m.
The ship's mission is a secret, but the technology on board will help engineers design better navigation and control systems for satellites.
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