In this image of the Andes along the Chile-Bolivia border, the visible and infrared data have been computer enhanced to exaggerate the color differences of the different materials. The scene is dominated by the Pampa Luxsar lava complex, occupying the upper right two-thirds of the scene. Lava flows are distributed around remnants of large dissected cones, the largest of which is Cerro Luxsar. NASA/GSFC/METI/ERSDA C/JAROS, and U.S./Japan ASTER Science Team/JPL
Astronomers using NASA's Hubble Space Telescope have found a bow shock around a very young star in the nearby Orion nebula, an intense star-forming region of gas and dust. It was taken in February 1995 as part of the Hubble Orion Nebula mosaic by Hubble's Wide Field and Planetary Camera 2, designed and built by NASA's Jet Propulsion Laboratory, Pasadena, Calif. NASA and the Hubble Heritage Team (STScI/AURA)
Apollo 12 astronaut Alan Bean holds a special environmental sample container filled with lunar soil collected during his sojourn on the lunar surface. A Hasselblad camera is mounted on the chest of his spacesuit. Pete Conrad, who took this image, is reflected in Bean's helmet visor, on Nov. 20, 1969. NASA
The two bright sources at the center of this composite x-ray image are co-orbiting supermassive black holes powering the giant radio source. Surrounded by multimillion degree x-ray emitting gas, and blasting out jets of relativistic particles, the supermassive black holes are separated by 25,000 light-years. At the cores of two merging galaxies in the Abell 400 galaxy cluster they are some 300 million light-years away. NASA/CXC/D.Hudson, T.Reiprich et al./AIfA/NRAO/VLA/NRL
Astronaut L. Gordon Cooper Jr. is hoisted up to a U.S. Navy helicopter during recovery operations in the Atlantic Ocean after the record-setting eight-day Gemini V mission in 1965. NASA
President Barack Obama is joined by members of Congress, including former astronaut Sen. Bill Nelson (r.) and school children as he talks to the crew aboard the International Space Station in March 2009. NASA
This is a rare view of Saturn's rings seen just after the Sun has set below the ring plane. This perspective is unusual because the Earth is slightly above Saturn's rings and the Sun is below them. Normally we see the rings fully illuminated by the Sun. The low concentration of material in these rings allows light from the Sun to shine through them. Phil Nicholson/Cornell University/Steve Larson/University of Arizona/NASA
This photo is the world's first view of Earth taken by a spacecraft from the vicinity of the Moon. The photo was transmitted to Earth by the United States Lunar Orbiter I and received at the NASA tracking station at Robledo De Chavela near Madrid, Spain. This crescent of the Earth was photographed August 23, 1966. NASA
A piece of NASA history landed at the Glenn Research Center's Visitor Center, now located at the Great Lakes Science Center in Cleveland, Ohio. The Apollo Command Module, used for the Skylab 3 mission in 1973, was moved successfully from Glenn to the Science Center. The module will be the focal point of the Visitor Center, which includes space and aeronautics artifacts, models and interactive experiences. NASA
This artist's rendition depicts the Huygens Probe, after deploying from the Cassini Orbiter, en route into the murky atmosphere of Saturn's largest moon, Titan. NASA
Pro-Moscow separatists paraded Ukrainian prisoners of war in Donetsk to the delight of cheering crowds today, as Kiev celebrated independence with a rare military parade in the capital.
BySabra Ayres, Correspondent
The dozens of captive Ukrainian soldiers moved down the main drag of this eastern rebel stronghold with their hands tied behind their back and their heads sunk low. Parallel rows of armed men ordered them to parade past the jeering crowds lining each side of the wide street.