STS-120 mission specialist Scott Parazynski participated in the second of five scheduled spacewalks as construction continues on the International Space…
The Glenn Research Center's Icing Research Tunnel is the world's largest refrigerated wind tunnel. During tests of a heated-air system…
Variations in ring particle concentration give Saturn's brilliant rings the appearance of ripples in a pond in this close-up view…
A crucial step in the Mars Sample Return mission would be to launch the collected sample away from the surface…
Gamma rays produce flashes that are brighter than a billion suns yet last only a few milliseconds and have been…
Skiers, hikers, and tourists prize Colorado's Rocky Mountains for the steep ski slopes, challenging climbs, and spectacular views; geologists and…
In the Space Shuttle Discovery's airlock, Astronaut Steve Robinson, left, and Japan Aerospace Exploration Agency Astronaut Soichi Noguchi prepare for…
At 86 meters (282 feet) below sea level, Death Valley, California, is one of the hottest, driest places on the…
Like a butterfly, a white dwarf star begins its life by casting off the cocoon that enclosed it. In the…
NASA's Mars Exploration Rover Opportunity recently stopped to analyze an exposure of rock near "Beagle Crater," on a target nicknamed…
