Astronaut Walter M. Schirra, Jr. confers with Guenter F. Wendt, McDonnell spacecraft test conductor, during simulated flight test activity in…
This image from the Chandra X-ray Observatory shows the central region of the starburst galaxy M82 and contains two bright…
This artist's animation illustrates a massive asteroid belt in orbit around a star the same age and size as our…
This new image from the Solar Dynamics Observatory's Atmospheric Imaging Assembly (AIA) shows in great detail a solar prominence taken…
In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, the multi-purpose logistics module Leonardo floats past…
NASA's Aqua satellite captured this image of the Gulf of Mexico on April 25, 2010 using its Moderate Resolution Imaging…
In the Operations and Checkout Building at NASA's Kennedy Space Center in Florida, the astronauts of space shuttle Discovery's STS-131…
Astronaut Rick Mastracchio, STS-131 mission specialist, participates in the mission's first spacewalk as construction and maintenance continue on the International…
Astronaut Rick Mastracchio takes part in the second spacewalk of STS-131. During the seven-hour, 26-minute spacewalk, Mastracchio and astronaut Clayton…
Astronaut Rick Mastracchio works on the truss section of the International Space Station during the second spacewalk of the STS-131…
