1. Education

Sally Ride and Kathryn Sullivan on Space Shuttle

Sally Ride and Kathryn Sullivan show sleep restraint on space shuttle.

By

Astronauts Kathryn D. Sullivan, left, and Sally K. Ride display a "bag of worms."
Sally Ride and Kathryn Sullivan show sleep restraint on space shuttle.

Astronauts Kathryn D. Sullivan, left, and Sally K. Ride display a "bag of worms." The "bag" is a sleep restraint and the majority of the "worms" are springs and clips used with the sleep restraint in its normal application.

Courtesy NASA Headquarters - GReatest Images of NASA (NASA-HQ-GRIN)
Astronauts Kathryn D. Sullivan, left, and Sally K. Ride display a "bag of worms." The "bag" is a sleep restraint and the majority of the "worms" are springs and clips used with the sleep restraint in its normal application. Clamps, a bungee cord and velcro strips are other recognizable items in the "bag."

©2014 About.com. All rights reserved.