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How Space Shuttles Work - HowStuffWorks
The Space Shuttle - NASA
Space Shuttle - Wikipedia
The Aeronautics of the Space Shuttle - NASA
Space shuttle | Names, Definition, Facts, & History | Britannica
how it works - NASA
Space Shuttle – Definition & Detailed Explanation - Sentinel Mission
Space Shuttle, the World’s First Reusable Spacecraft
Space exploration - Shuttle, Astronauts, Missions | Britannica
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