Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
Video: Former U.S. Air Force personnel claim they experienced UFO activity near nuclear sites at which they worked.
The footage is considered some of the best of the historic 1969 moonwalk, but the film was lost in archives for years and was badly damaged when found.
First contact will be made by Malaysian astrophysicist.
Scientists propose creating synthetic organisms that use the resources available in the solar system to make supplies astronauts would need to survive on another planet.
'Coreshine' might reveal clues about how planets develop, say scientists.
Second problem in three months with docking or undocking Russian craft at the space station.
'Equinox,' which is Latin for 'equal night,' is a convenient oversimplification.
Discovery will launch Nov. 1, one of three remaining shuttle launches for NASA.
New Web-based observatory goes live to broadcast real-time views of eye-catching aurora borealis.
Humanity’s move into space has been called mankind’s greatest adventure. Certainly, it can be considered one of the most dramatic and triumphant.
The NASA team has wrapped up its Desert RATS Analog mission, an intensive series of tests of new aerospace equipment and technology.
Jupiter will pass 368 million miles from Earth on Sept. 20, its closest approach since 1963, and will be visible to the naked eye.
Physicists use accelerators to create high-energy collisions so they can study the properties of the fundamental building-blocks of matter.
To participate in the first annual International Observe the Moon Night, just look up to the sky.
The spacecraft could carry seven people and fly in low-Earth orbit as soon as 2015.
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Science journalist blogs about humans and other wildlife.