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.
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.
Discover how space exploration impacts your daily life.
Engineers build a simulated Orion crew module for testing later this year.
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On Mar. 12, 2008, the Cassini spacecraft will make its closest flyby yet to a moon.
A summary of NASA's many programs and projects.