Mars’ northern-most sand dunes are beginning to emerge from their winter cover of seasonal carbon dioxide (dry) ice. Dark, bare…
NASA's THEMIS mission observed how dense particles normally near Earth in a layer of the uppermost atmosphere called the plasmasphere…
An illustration of Earth's magnetic field showing the location of the plasmasphere.
This graphic depicts the passage of asteroid 2014 EC past Earth on March 6, 2014.
At the Gagarin Cosmonaut Training Center in Star City, Russia, flight instructors monitor the progress of qualification exams for the…
At the Gagarin Cosmonaut Training Center in Star City, Russia, a flight instructor monitors the progress of qualification exams for…
At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 39/40 Soyuz Commander Alexander Skvortsov of Roscosmos studies a…
At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 39/40 Soyuz Commander Alexander Skvortsov of Roscosmos smiles before…
At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 39/40 Soyuz Commander Alexander Skvortsov of Roscosmos smiles before…
At the Gagarin Cosmonaut Training Center in Star City, Russia and with the visage of Yuri Gagarin, the first human…
