Astronomy is the study of the stars and the only field of study at Hogwarts that has a direct equivalent in the Muggle world. Astronomy classes take place in the Astronomy Tower, the tallest tower in Hogwarts, and are taught by Professor Aurora Sinistra. Lessons involve observations of the night skies with telescopes. Student homework activities include learning the names of stars, constellations and planets, and their location, movements, and environments.