Mysteries in Space - Hansen, Rosanna

In this book, readers follow scientists as they try to unravel four mysteries in space: what was the huge fireball that caused an explosion in Siberia in 1908? Why do the Sun's two poles change places every eleven years? How were the strange spiraling canyons on Mars's polar caps formed? Has life ever existed on Mars?

Mysteries in Space 2006, Children's Press(CT), New York, NY

ISBN-13: 9780516254500

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