Watch the station in flight.
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It's you vs. the computer in a competition to plan five NASA Earth missions.
Match cool pictures of test airplanes and models.
NASA's next Mars rover is getting ready for a wild ride to the Red Planet in 2011.
Submit your name to be included on a microchip that will be sent to Mars as part of NASA’s Mars Science Laboratory mission, scheduled to launch in 2011.
Submit your video answering why you think space exploration is important and it could be featured online!
NASA's new Station Spacewalk Game gives players the experience of what it's like to work outside a spacecraft.
Using a colossal radio telescope in the Mojave Desert, school kids around the world are helping NASA track the LCROSS spacecraft as it heads for a crash landing on the moon.
Pelt Jupiter with comets!
See how the heavenly bodies "size up" to each other.