
NASA astronaut Megan McArthur services donor cell samples inside the Kibo laboratory module.

NASA astronaut Shane Kimbrough sets up medical-imaging gear to capture detailed views of an astronaut's retina.

ESA astronaut Thomas Pesquet gathers science hardware inside the U.S. Destiny laboratory module.

Cosmonaut Oleg Novitskiy smiles for a picture as he maneuvers through the International Space Station.

Flight Research Inc.’s Bell OH-58C Kiowa helicopter takes off from a research helipad at NASA’s Armstrong Flight Research Center in…

Flight Research Inc.’s Bell OH-58C Kiowa helicopter lands on a helipad at NASA’s Armstrong Flight Research Center in California.

Flight Research Inc.’s Bell OH-58C Kiowa helicopter hovers over a helipad after completing an urban air mobility approach.

NASA’s X-59 requires the use of creative and strategic supersonic technologies to control and soften the jarring sound that hits…

NASA’s X-59 requires the use of creative and strategic supersonic technologies to control and soften the jarring sound that hits…

The X-31 completed its final research flight of 555 for the program.