Image of the DayExpedition 18 commander Michael Fincke prepared to take a picture of his helmet visor with a digital camera during a...Astronaut Rex Walheim pauses before the reviewing stand during the 56th Inaugural Parade on Tuesday, Jan. 20, 2009. He is...The hazard avoidance camera on the front of NASA's Mars Exploration Rover Spirit took this image after a drive on...This image of Centaurus A shows a spectacular new view of a supermassive black hole's power. Jets and lobes powered...A violent and chaotic-looking mass of gas and dust is seen in this Hubble Space Telescope image of a nearby...NASA Acting Administrator Christopher Scolese and other NASA senior management participate in a wreath-laying ceremony as part of NASA's Day...The unique planetary nebula NGC 2818 is nested inside the open star cluster NGC 2818A. Both the cluster and the...Though at first glance this may appear to be a scene of an unmanned vehicle on a Mars landscape, it...This image, taken through a telescope, is of the newly designed super pressure balloon aloft over Antarctica. NASA and the...President Barack Obama, Michelle Obama and Vice President Joe Biden watch as the NASA Lunar Electric Rover stops in front...In this is never-before-seen photograph, the Apollo 7 float, which included the capsule and crew (out of frame), take part...How can a rocket engine that generates 5,000 degree steam and 13,800 pounds of thrust form icicles at the rim...Space shuttle Discovery is silhouetted against the dawn's early light as it makes the slow 3.4-mile journey to Launch Pad...Saturn's icy moon Dione has undoubtedly experienced geologic activity since its formation, as evidenced by the tectonic faults and craters...This panorama shows the vista from which NASA's Mars Exploration Rover Opportunity spent five weeks in November and December 2008...Spitzer Space Telescope set its infrared eyes upon the dusty remains of shredded asteroids around several dead stars. This artist's...Space shuttle Discovery rolled out of Orbiter Processing Facility 3 at NASA's Kennedy Space Center on its way to the...Contained within the most massive and active star-forming region in the Small Magellanic Cloud, star cluster NGC 346 delivers energetic...Astronomers have long puzzled over why a small, nearby, isolated galaxy is pumping out new stars faster than any galaxy...Looking for all the world like a New Year's fireworks display, this image from NASA's Spitzer Space Telescope shows the...After dark at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, space shuttle Endeavour was attached to...These Martian rocks, containing a hydrated mineral similar to opal, are light-toned and appear cream-colored in this false-color image taken...The Cassini-Huygens mission team sends their best wishes for a happy, healthy and safe holiday season. We've enjoyed sharing the...Like swirling, shiny flakes sparkling in a snow globe, this image captures an instantaneous glimpse of many hundreds of thousands...This computer graphic shows three craters in the eastern Hellas region of Mars, containing concealed glaciers that were detected by...NASA's Hubble Space Telescope caught Jupiter's moon, Ganymede, seemingly playing a game of peek-a-boo in this image from April 2007....Layers of haze covering Saturn's moon Titan are seen in this image taken by Voyager 1 on Nov. 12, 1980...Fresh from the STS-126 mission space shuttle Endeavour, mounted atop its modified Boeing 747 carrier aircraft, flew over California's Mojave...On Oct. 5, 2008, just after coming within about 15 miles of the surface of Enceladus, NASA's Cassini captured this...Enormous stars in the Tarantula Nebula, one of the largest massive star-forming regions close to the Milky Way, are producing...Scientist-astronaut Harrison H. Schmitt stands by the American flag during a moonwalk on the Apollo 17 mission. Home, that small...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...Space shuttle Endeavour touches down at Edwards Air Force Base on Nov. 30, 2008, concluding the STS-126 mission. This image...Backdropped against Earth's horizon and the blackness of space, Endeavour's Canadian-built robot arm appears amidst elements of the International Space...