Get a sneak peak at artwork celebrating NASA's half century of exploration.
Discover how space exploration impacts your daily life.
Look at changes in global conditions over time.
Sally Ride became the first American woman in space on June 18, 1983.
See how astronauts' "personal spacecraft" have changed from Mercury to Shuttle and into the future.
NASA tests future technology for living and working on the surface of the moon.
The Space Ranger joins the crew of the shuttle Discovery.› Play Now
Discovery and crew deliver the main segment of Japan's Kibo module to the International Space Station.
Explore our interactive model to learn about the tools Phoenix will use to study the northern plains of Mars.
Follow Phoenix in its harrowing and challenging final descent to the Martian surface.
Check out archival videos, share your thoughts, visit a virtual mission control and try your hand at docking an Apollo spacecraft or landing on the moon.
Alan Shepard rode his Freedom 7 capsule into history on May 5, 1961.
As humanity ventures farther into the solar system, the focus on our home planet is as sharp as ever.
Learn more about NASA spacecraft studying our home planet.
NASA Deputy Administrator Shana Dale and other officials visit an archaeological site in Guatemala.
Endeavour delivers Japanese and Candian elements to the space station.
Japanese and Canadian components head to the space station.
Engineers build a simulated Orion crew module for testing later this year.› View Gallery
On Mar. 12, 2008, the Cassini spacecraft will make its closest flyby yet to a moon.