Airlock
Videos
An airlock is a room or compartment which permits passage between environments of differing atmospheric pressure or composition, while minimizing the changing of pressure or composition between the di
An airlock on board Space Shuttle Atlantis
An early airlock, with decompression instructions
US Navy submarine diving lock out
STS-103 closing the airlock
Extravehicular activity
Videos
Extravehicular activity is any activity performed by an astronaut in outer space outside of a spacecraft. This includes spacewalks, lunar or planetary surface exploration, and stand-up EVAs where astr
Cosmonaut Sergey Volkov works outside the International Space Station on August 3, 2011.
Stephen Robinson riding the Canadarm2 while conducting the first in-flight repair of the Space Shuttle during STS-114 on August 3, 2005. The landmass in the backdrop is the Bari region of Somalia.
Ed White performs the first American spacewalk during Gemini IV.
Buzz Aldrin walks on the Moon during the pioneering Apollo 11 mission in 1969.