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      one of two or more sections of a rocket, each section having its own fuel
      and engine


The solid rocket boosters were part of the first stage of the space shuttle.

A rocket gets lighter by dropping each stage once it runs out of fuel.


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First Stage of the Saturn Rocket


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Booster staging
A rocket launches. The first stage falls away. The upper stage keeps flying.
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Page Last Updated: October 9th, 2014
Page Editor: Sandra May