天文学是对天体的研究，例如行星，恒星和星系。天文学家利用对天空的观测来了解我们所生活的宇宙的更多信息。这些观测无需任何仪器，简单的望远镜或非常复杂的仪器即可完成。能够以高分辨率分辨超出可见光谱的电磁波的设备。天文学是最古老的自然科学之一，并且在相关学科（例如物理学）中的一些重大发现可以追溯到天文学研究。
The mission of the Astronomy Department at College of Alameda is to introduce students to the Universe and insight into its mysteries. <br>Astronomy is the study of heavenly bodies, such as planets, stars, and galaxies. Astronomers use observations of the sky to learn more about the universe we live in. These observations can be made with no instruments, with simple telescopes, or with very sophisticated apparatus able to sense electromagnetic waves beyond the visible spectrum with great resolution. Astronomy is one of the oldest of the natural sciences and some of the great discoveries in related disciplines, such as physics, trace their origin to astronomical studies.<br>With a degree in Astronomy you can do basic and applied research, engineering, and science education.