
West Antarctica’s massive Pine Island Glacier is seen out the window of NASA’s DC-8 research aircraft as it flies at…

During the second spacewalk of the STS-131 mission, NASA astronauts Rick Mastracchio and Clayton Anderson (out of frame) unhooked and…

During the STS-131 mission’s first spacewalk, which lasted about 6.5 hours, NASA astronaut Rick Mastracchio helped move a new 1,700-pound…

The Expedition 23 crew photographed this view of the aft portion of space shuttle Discovery, including the three main engines,…

NOAA’s Laurel Watts and NASA Dryden’s Dennis Pitts installed NOAA’s Ozone instrument on NASA’s Global Hawk.