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What is the surface of Mars like? Why does Venus glow in the dark? How do scientists explore faraway planets? In this book, you'll find out the answers and lots more fascinating facts about the Solar System. Series: BeginnersHow many eyes do spiders have? What do fire fighters wear? What kind of truck can transport the space shuttle? Find the answers to these questions and lots more in these exciting books for children who are learning to read on their own.