
This angled image of the ISS Solar Arrays frames the Earth scene taken by astronauts of Expedition 50.

Expedition 51 crew members Fyodor Yurchikhin and Jack Fischer.

Expedition 51 crew members Fyodor Yurchikhin and Jack Fischer.

Expedition 51 crew members Fyodor Yurchikhin and Jack Fischer.

Fyodor Yurchikhin of the Russian Federal Space Agency (Roscosmos, left) and Jack Fischer of NASA (right) report to Russian state…

MAVEN scientists to determined that the majority of the planet’s air was lost to space.

Dr. Nancy Grace Roman is shown with a model of the Orbiting Solar Observatory (OSO) in 1962. She was the…

Scientists have discovered a mysterious flash of X-rays using NASA’s Chandra X-ray Observatory, in the deepest X-ray image ever obtained.

Expedition 51 crew members Fyodor Yurchikhin and Jack Fischer participate in the first of two days of final qualification exams.

Expedition 51 crew member Fyodor Yurchikhin prepares to enter a Russian segment systems simulator.