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Is there life on Mars? Early astronomers believed so. They thought there might be oceans, vegatation, and even intelligent life forms on the planet. With the help of sophisticated telescopes and satellites, we are continually learning more about our nearest space neighbor. Today we know that the red planet is the most Earth-like planet in our Solar System. And although unlikely, astronomers still haven't ruled out the possibility of life existing on Mars. Read Mars to learn why humans could not live on Mars, and why manned space travel seems almost impossible. With fascinating photographs, this book will take you right to the mysterious Martian surface.
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