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Tim Kopra of NASA Tests His Vestibular System

Tim Kopra of NASA and Anatoly Ivanishin of Roscosmos

Tim Peake of the European Space Agency

Orbital ATK’s Cygnus cargo craft approaches the International Space Station on Dec. 9, 2015. Cygnus was grappled by the station’s…

Soyuz Spacecraft at the Integration Facility

Soyuz Spacecraft at the Integration Facility

Soyuz Spacecraft at the Integration Facility

NASA’s Cassini spacecraft spied details on the pockmarked surface of Saturn’s moon Prometheus.

NASA’s Cassini spacecraft captured this view of Saturn’s moon Epimetheus.

NASA’s Cassini spacecraft captured this view of Saturn’s moon Atlas.