NASA astronaut Mark Vande Hei gathers and organizes spacewalking tools inside the U.S. Quest airlock.
Expedition 65 astronauts train for a medical emergency aboard the International Space Station.
Astronaut Mark Vande Hei works to relocate the Multi-use Variable-g Platform inside the Kibo laboratory module.
Astronaut Megan McArthur swaps sample cartridges in a research rack inside the Materials Science Laboratory rack.
Astronauts Shane Kimbrough and Thomas Pesquet pose for a portrait while working on U.S. spacesuits
Russia's ISS Progress 77 (77P) cargo craft is pictured docked to the Pirs docking compartment on the International Space Station's…
New research confirms how particles from space can be sent careening down into Earth’s atmosphere to create the aurora, filling…
NASA astronaut Mark Vande Hei works on an investigation of how gravity affects immune response.
Two U.S. spacesuits are pictured inside the Quest airlock.
Commander Akihiko Hoshide replaces a science rack fan inside the International Space Station's U.S. Destiny laboratory.
