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"The year is 2125 and the Magellan Science Academy has given two lucky cadets "Thulium tickets" to join a team of space explorers on a special time-travel mission twenty-four hours into the future. But when their mission goes wrong, the two kids must band together with a tiny flying saucer sidekick to save themselves, their crew, and all of Space Mountain--before time runs out and the galaxy is destroyed!"--Back cover.