Astronomy

Overview

Astronomers explore the origin and nature of the universe, its galaxies, stars, planets, and other matter that it contains. Astronomy is all around us—look up!

Have you ever looked at the night sky and wondered what exists beyond our universe? Earth's dynamic sun is the source of all life on our planet. The motions of astronomical objects determine the day-night cycle, the seasons of the year, the tides, the timing of eclipses, and the visibility of comets and meteor showers. Astronomical events have also formed the basis for timekeeping, navigation, and myths in cultures worldwide for thousands of years. Much of astronomy is visual, providing detailed images of planets, galaxies, and other deep-sky objects, and can be appreciated for its aesthetic appeal and scientific depth.

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