Amazing Photos from the Space Shuttle Discovery

Space Shuttle Discovery
NASA

Man Overboard
No, no one really fell out, but one of the scariest scenarios for astronauts during extravehicular activity (EVA)—or a spacewalk—is the possibility of going adrift with no tether and a malfunctioning jet pack. On this mission in Sept. 1994, astronaut Carl Meade tested a back-up jet pack intended to prevent that from happening. The picture was taken 130 nautical miles above Earth—a bad place to become a castaway.

Get the Latest Photos from Time.com
Get TIME photos and pictures of the week delivered directly to your inbox.