In this historical photo from the U.S. space agency, STS-63 astronauts Bernard A. Harris, Jr., payload commander (right), and C. Michael Foale, mission specialist (left), are ready to exit Discovery's airlock for a spacewalk.
The pair would test new insulation to protect astronauts from the cold during extravehicular activity, but the Mission Control cut their spacewalk short after the men reported feeling very cold in their suits. On this EVA, Harris became the first African American to walk in space.
Each weekday, SPACE.com looks back at the history of spaceflight through photos (archive).
Get the Space.com Newsletter
Breaking space news, the latest updates on rocket launches, skywatching events and more!
The National Aeronautics and Space Administration (NASA) is the U.S. government agency in charge of the civilian space program as well as aeronautics and aerospace research. Founded in 1958, NASA is a civilian space agency aimed at exploring the universe with space telescopes, satellites, robotic spacecraft, astronauts and more. The space agency has 10 major centers based across the U.S. and launches robotic and crewed missions from the Kennedy Space Center in Cape Canaveral Florida. It's astronaut corps is based at the Johnson Space Center in Houston. To follow NASA's latest mission, follow the space agency on Twitter or any other social channel, of visit: nasa.gov.