NASA / SCIENCE PHOTO LIBRARY NASA / SCIENCE PHOTO LIBRARY
Inside Spacelab. Astronaut Susan L. Still floats weightlessly inside the Spacelab module aboard the shuttle Columbia. The Spacelab is seen here equipped to carry out experiments as part of the Microgravity Science Laboratory (MSL-1) mission. The absence of gravity allows many novel materials science and biological experiments to be performed. Photographed during mission STS- 83 (4-8 April 1997).
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