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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A spaceplane is a vehicle that combines features of an aircraft and a spacecraft, becoming an aircraft that can endure and maneuver in the vacuum of space or likewise a spacecraft that can fly like an airplane. Only five spaceplanes have successfully flown to date, having reentered Earth's atmosphere, returned to Earth, and safely landed - the X-15, Space Shuttle, Buran, SpaceShipOne, and X-37, all five being rocket gliders. Learn more about spaceplanes, their designs and history, in the following pages.