861836
9781410301666
Despite gravity's importance, people have started to understand it only in the last three hundred years or so. Before the seventeenth century, astronomers had little idea what kept the planets in orbit and no idea that it was the same force that made objects fall to Earth. This book traces the history of discoveries about gravity from ancient beliefs about the universe to modern-day research into black holes.Chris Woodward is the author of 'Routes of Science - Gravity', published 2004 under ISBN 9781410301666 and ISBN 1410301664.
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