
Spacewalker Mark Vande Hei is pictured during a spacewalk to service components on the Canadarm2 robotic arm.

Astronaut Mark Vande Hei verifies his U.S. spacesuit fits inside the International Space Station.

Spacewalker Mark Vande Hei is pictured during a spacewalk to service components on the Canadarm2 robotic arm.

Space Station Commander Akihiko Hoshide of the Japan Aerospace Exploration Agency checked the fit of his U.S. spacesuit.

Joe Walker reached 354,200 feet in X-15 #3, the highest altitude reached by the X-15.

Expedition 65 Flight Engineers Shane Kimbrough and Megan McArthur work on a Floating Potential Measurement Unit.

Astronaut Mark Vande Hei participates in a U.S. spacesuit fit check to get ready for a spacewalk.

Astronaut Akihiko Hoshide participates in a U.S. spacesuit fit check to get ready for a spacewalk.

Astronaut Shane Kimbrough carries an emergency manual describing procedures the crew would take in the unlikely event of a depressurization…

Astronaut Megan McArthur works on the Cardinal Muscle investigation.