by TrudyE.Bell (Author)
Although the ground feels solid, in reality, all life on Earth is on the outside of an 8,000-mile-diameter ""spaceship"" that is twirling on its axis, speeding around the Sun, and sweeping around the galaxy. This work explains how astronomers can tell that Earth is going through such gyrations and what effects those motions have on the planet.
Format: Library Binding
Pages: 80
Edition: Library Binding
Publisher: Chelsea House Publishers
Published: 15 Dec 2007
ISBN 10: 0791090507
ISBN 13: 9780791090503