The Science of Astronomy

Astronomy is the branch of science that studies the sun, the solar system, the remote stars, distant galaxies, and all the detectable bodies in the universe. Astronomy is often regarded as the oldest science, since more than 5000 years ago; motions in the sky were used to predict events such as the annual flood on the Nile River. During the era of modern exploration, astronomy had practical applications in navigation, surveying, and time keeping.