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In this engaging and accessible exploratory work, accomplished astrophysicist Neil F. Comins shows how ten hypothetical astronomical situations would affect our planet and life on it. What if the Moon didn't exist, for example? The Earth would be rotating much faster than it presently does, tides would be lower, and life would be much more primitive than it is today. What if the Moon Didn't Exist? has been made into TV, radio, planetarium, and...

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Discovering the Universe: From the Stars to the Planets" engages students with an inquiry-based exploration of the universe and the scientific process. Developed with a "big picture" approach, the text first explains how the stars, the galaxies, and the entire universe formed, and then discusses planets and other components of our solar system. Students follow this natural conceptual progression within a proven learning method designed to addr...