
In this undated image from the 1960s, Nancy Grace Roman sits in her office in NASA Headquarters. Roman was the…

Astronaut Raja Chari wears virtual reality goggles to practice spacewalk rescue scenarios.

Astronaut Kayla Barron sets up hardware for the Intelligent Glass Optics study in the International Space Station’s Microgravity Science Glovebox.

ESA astronaut Matthias Barron poses for a portrait aboard the International Space Station.

Astronaut Tom Marshburn wraps up skin tissue research operations inside the U.S. Destiny laboratory module’s Microgravity Science Glovebox.

Astronaut Tom Marshburn stows blood samples he collected earlier in an International Space Station science freezer.

Joe Walker was the first to fly the variable-geometry wing X-5 to a full 60-degree wing-sweep angle, adjusted in flight.

The Cygnus space freighter attached to the space station8 after delivering 8,300 pounds of cargo.

The 57.7-foot-long Canadarm2 robotic arm is pictured extending from the International Space Station’s Harmony module.