
The Colorado Plateau of Arizona, Colorado, New Mexico, and Utah is made of mostly flat-lying layers of sedimentary rock that…

The pale blue Earth serves as a backdrop for astronaut Michael Gernhardt, who is attached to the Shuttle Endeavour's robot…

This image of the elliptical galaxy NGC 1132 and its surrounding region combines data from NASA's Chandra X-ray Observatory and…

Professor Stephen Hawking ireceived the world's oldest award for scientific achievement - the Royal Society's prestigious Copley medal - for…

Astronaut Scott Parazynski smiles for a photograph while he and the crew of STS-120 walk inspect the underside of the…

This glowing region reveals arcs and bubbles formed when stellar winds - streams of charged particles ejected by the Trapezium…

Even if the moon really were made of green cheese it probably wouldn't look this bizarre. Still, this mosaic of…

This image from the Moderate Resolution Imaging Spectroradiometer MODIS on NASA's Terra satellite shows the Klyuchevskaya volcano on Russia's Kamchatka…

This image of the mountainous Shenandoah National Park was acquired by the Shuttle Radar Topography Mission aboard the Space Shuttle…

Fed by multiple waterways, Brazil's Negro River is the Amazon River's largest tributary. The river courses through the country's Jau…