Meets at midnight at the top of the Astronomy Tower. Essays for the theory portion involve learning a lot of facts (Ron and Harry's fifth year essay on Jupiter's moons is the best example). During their practical O.W.L., the fifth years had to fill in a star chart by locating and correctly identifying various celestial bodies then visible in the sky.
Taught by: Professor Aurora Sinistra
Lesson:
During the first year of studies at Hogwarts, students must study the night skies through their telescopes every Wednesday at midnight and learn the different names of the stars and the movements of the planets. Toward the end of the year, Hermione was quizzing Ron on Astronomy. Their studying included using a map of Jupiter. It was noted that Harry tried to learn the names of Jupiter's moons in his fifth year of study at Hogwarts.
