Assembly and ongoing maintenance of the International Space Station, which is as big as a football field, requires all of our accumulated EVA knowledge.
Assembly and maintenance of the International Space Station has required nearly 1,000 EVA hours so far. Handholds and tether points on the exterior of the modules and other equipment make maneuvering safe and easy.
An invaluable tool for EVA work is the Canadarm2 on the International Space Station, much like the Canadarms located on each Space Shuttle. Here it was used to position Stephen Robinson during STS-114.
For safety, astronauts always perform EVA work in pairs. Here, cosmonauts Alexander Skvortsov and Oleg Artemyev, wearing Russian Orlan spacesuits, install equipment and perform experiments near the Russian segment of the International Space Station.
This astronaut's gold-coated EMU visor reflects Space Shuttle Discovery's payload bay and the limb of the Earth during the third Hubble servicing mission in 1999.
Cosmonaut Sergey Ryazanskiy's visor reflects his surroundings outside the International Space Station while he and another cosmonaut retrieved scientific experiments and installed new high definition cameras on the outside of the space station in early 2014.