Japan Aerospace Exploration Agency astronaut Koichi Wakata, Expedition 38 flight engineer, performs a VO2max experiment while using the Cycle Ergometer…
In the International Space Station’s Destiny laboratory, NASA astronaut Michael Hopkins, Expedition 38 flight engineer, prepares to install and activate…
On Dec. 4, 1973, NASA's Pioneer 10 spacecraft sent back images of Jupiter of ever-increasing size. Here, images gradually build…
The youngest member of an important class of objects has been found using data from NASA's Chandra X-ray Observatory and…
This colorful view from NASA's Cassini mission is the highest-resolution view of the unique six-sided jet stream at Saturn's north…
A close inspection of this image, photographed by one of the Expedition 38 crew members aboard the International Space Station,…
Two black holes are entwined in a gravitational tango in this artist's conception. Supermassive black holes at the hearts of…
This image of the Transantarctic Mountains was taken from the NASA P-3 airborne laboratory on Nov. 27, 2013, near the…
The sunlit edge of Titan's south polar vortex stands out distinctly against the darkness of the moon’s unilluminated hazy atmosphere.…
Activity at Kliuchevskoi Volcano on Kamchatka Peninsula in the Russian Federation is featured in this image photographed by an Expedition…
