Scientist-astronaut Harrison H. Schmitt stands by the American flag during a moonwalk on the Apollo 17 mission. Home, that small…
The nose of one of NASA’s two Global Hawk unmanned high-altitude aircraft houses communications and sensor payloads on Earth science…
This Global Hawk unmanned aircraft is one of two that are used by NASA for Earth science missions and by…
Apollo 11 commander Neil Armstrong and Apollo 17 commander Gene Cernan toured one of the Altair mock-ups at NASA’s Johnson…
United Space Alliance technicians at NASA’s Dryden Flight Research Center monitor the positioning of a work stand as it is…
STS-126 pilot Eric Boe inspects connections on the belly of space shuttle Endeavour, following landing at Edwards Air Force Base…
This artist’s concept shows the closest known planetary system to our own-Epsilon Eridani. Observations from NASA’s Spitzer Space Telescope show…
More than four centuries after the brilliant star explosion witnessed by Tycho Brahe and other astronomers of the era, NASA’s…
With a diameter of about 170,000 light years, galaxy Messier 101 (M101) is nearly twice the size of our Milky…
Floodlights cast long shadows, like a setting sun, over space shuttle Endeavour as if as it sits on Runway 4…