Imagery rarely seen by the public which highlights space shuttle launches from 1981-2010. Set to certain relaxing music, this special video was produced by NASA engineers at the Glenn Research Center.
Released Dec. 2010. Produced by NASA. Silent documentary.
The shape of the universe is determined by a struggle between the momentum of expansion and the pull of gravity. The rate of expansion is expressed by the Hubble Constant, Ho, while the strength of gravity depends on the density and pressure of the matter in the universe.
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