Astronomy is the scientific study of celestial bodies. That means stars, planets, galaxies, moons, asteroids, comets, and more are studied in order to unlock the secrets of our universe and how it came to be. Did you know that astronomy is one of the oldest sciences in the world? The patterns in the night sky were first called “constellations” by the Arabs. They used the positions of the stars in the night sky to navigate, and to determine when the best time to plant crops was.