
On May 21, 2011, Iceland’s Grimsvotn Volcano erupted, sending an ash plume 12 miles (20 kilometers) high and closing Keflavik…

NEEMO divers in Superlite helmets – which simulate the helmets of spacesuits – demonstrate tethering to the surface, translation lines,…

Astronaut Andrew Feustel reenters the space station after completing n 8-hour, 7-minute spacewalk at 10:12 a.m. EDT Sunday, May 22,…

This artist concept features NASA’s Mars Science Laboratory Curiosity rover, a mobile robot for investigating Mars’ past or present ability…

The newly-installed Alpha Magnetic Spectrometer-2 is visible at center of the International Space Station’s starboard truss. The Alpha Magnetic Spectrometer,…

Astronaut Greg Chamitoff made his way inside the station as Andrew Feustel awaited his turn at the end of the…

Astronaut Drew Feustel works in the vacuum of space during the first of four spacewalks during the STS-134 mission of…

This image of space shuttle Endeavour, taken by STS-134 mission specialist Ron Garan on May 19, shows the craft docked…

This image of the space shuttle Endeavour’s starboard wing was taken by the Expedition 27 crew during a survey of…

At 5:15 a.m. EDT today, Endeavour began the nine-minute Rendezvous Pitch Maneuver, or ‘backflip,’ on its last visit to the…