NASA astronauts scheduled for ISS Expedition crew 39/40 during weightless training simulating International Space Station spacewalk maintenance at the Johnson Space Center April 23, 2013 in Houston, TX.
NASA astronauts scheduled for ISS Expedition crew 39/40 during weightless training simulating International Space Station spacewalk maintenance at the Johnson Space Center April 23, 2013 in Houston, TX.
Size: 4700px × 3760px
Location: Houston, Texas, USA
Photo credit: © NASA Photo / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: america, astronaut, astronauts, crew, horizontal, houston, iss, nasa, pool, simulation, space, spacesuits, spacewalk, spacewalking, texas, training, underwater, usa, weightless
