Earth and the Solar System

Learn the secrets of the solar system with easy to follow experiments that explore and explain space. Find out why the planets move around the sun and why the Earth is the only known planet to support life. History and quiz boxes explain ancient ideas about the planets and biography boxes tell the stories of early astronomers. Earth and the Solar System examines: - How Earth revolves around the sun in an orbit - The difference between a meteor and a meteorite - How Isaac Newton developed his theory of gravity - The greenhouse effect and the ozone layer - The first man-made satellite