June 26th, 2011
06:21 PM ET

Glossary: SRB

An SRB is a solid rocket booster, one of the twin rockets that flank the space shuttle and provide extra thrust to achieve orbit.

Filed under: Glossary
June 5th, 2011
05:45 PM ET

Glossary: Orbiter

The component of the space shuttle that returns to earth - the white "airplane."

Filed under: Glossary
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