The Grand Canyon is one of North America’s most spectacular geologic features. Carved primarily by the Colorado River over the…
NASA’s Spirit rover has successfully driven to its first target on Mars, a football-sized rock that scientists have dubbed Adirondack.…
Airglow above Earth’s horizon and solar array panels add color to this scene of a portion of the International Space…
Framed by Florida greenery, Space Shuttle Discovery lifts off Launch Pad 39B at 10:39 a.m. EDT on the historic Return…
Sculpted by stellar winds and radiation, these fantastic, undulating shapes lie within the stellar nursery known as M17, the Omega…
STS-117 mission specialist Steven Swanson moves through a hatch in the Quest Airlock of the International Space Station as the…
No sudden, sharp boundary marks the passage of day into night in this gorgeous view of ocean and clouds over…
Mount Saint Helens exemplifies how Earth’s topographic form can change greatly even within our lifetimes. The mountain is one of…
Pushing the limits of its powerful vision, NASA’s Hubble Space Telescope uncovered the oldest burned-out stars in our Milky Way…
