Russian cosmonaut Alexander Misurkin conducts a spacewalk.
The Japanese "Kounotori" H2 Transfer Vehicle-4 is currently attached to the Earth-facing port of the International Space Station's Harmony node.
European Space Agency astronaut Luca Parmitano works with Microgravity Science Laboratory.
Russian cosmonaut Alexander Misurkin conducts a spacewalk.
NASA astronaut Karen Nyberg, Expedition 36 flight engineer, works with new test samples for the Advanced Colloids Experiment.
Russian cosmonaut Alexander Misurkin conducts a spacewalk.
This image shows the potentially hazardous near-Earth object 1998 KN3 as it zips past a cloud of dense gas and…
Sierra Nevada Corporation's Dream Chaser engineering test spacecraft was hoisted into the air during a captive carry test Aug. 22…
Sierra Nevada Corporation's Dream Chaser engineering test spacecraft was suspended from a cable from a large helicopter during its captive…
A Sikorsky S-64 Sky Crane helicopter operated by Erickson Air Crane lifted Sierra Nevada's Dream Chaser test spacecraft into the…
