NASA astronauts Chris Cassidy and Robert Behnken conduct a #spacewalk to finish upgrade work on the #InternationalSpaceStation (ISS). The spacewalk is expected to be the last effort to conclude more than three years of upgrade of the station’s power system.
In This Story: NASA
The National Aeronautics and Space Administration is an independent agency of the U.S. Federal Government responsible for the civilian space program, as well as aeronautics and space research. NASA was established in 1958, succeeding the National Advisory Committee for Aeronautics.