Imagine being out in space, untethered to anything...sound pretty cool? Actually, most spacewalks keep astronauts tethered to the ship.
This astronaut is floating through the space capsule
An astronaut makes adjustments to the Hubble space telescope.
An astronaut floats securely in space.
These prints were left by American astronauts on the moon.
The lunar landing was the most important space walk in history. Most spacewalks don't get as much attention, though. Instead, they call for routine maintenance, as shown next.
Mission Specialist Scott Parazynski checks out his repair work on the fully deployed solar array of the International Space Station.
Astronauts may be tethered to the Space Shuttle, attached to the Remote Manipulator Arm (as above), or equipped with free-floating maneuver packs. And sometimes they take props with them...
Astronauts show their lighter side by sporting a For Sale sign as they recapture a communications spacecraft.
clipped from: science.howstuffworks.com 
