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"Is this all real? Or has this been happening inside my head?"
The subject of this article is a real-life person, company, product, or creative work that has been mentioned "in-universe" in a canon source. The Harry Potter Compendium is written from the perspective that all information presented in canon is true (e.g., Hogwarts really exists), and, as such, details contained in this article may differ from real world facts. |
- "Jupiter's biggest moon is Ganymede, not Callisto..."
- —Hermione Granger correcting Ron Weasley's essay about Jupiter's Moons[src]
Ganymede is the largest of Jupiter's moons. It is studied in Astronomy class at Hogwarts School of Witchcraft and Wizardry.
Appearances[]
- Harry Potter and the Order of the Phoenix (First mentioned)
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| Professors: Aurora Sinistra | |||||
| Astronomy at Hogwarts: Astronomy department · Astronomy Tower · Astronomy Room · Astronomy Stairs · Astronomy Corridor · Astronomy reading room · Astronomy classroom | |||||
| Astronomers: Aurora Sinistra · Copernicus · George von Rheticus · Perpetua Fancourt | |||||
| Objects: Globe of the Moon · Lunascope · Moon chart · Orrery · Star chart · Telescope | |||||
| Planets: Jupiter · Mars · Mercury · Neptune · Pluto · Saturn · Uranus · Venus | |||||
| Satellites: Callisto · Europa · Ganymede · Io · Moon | |||||
| Constellations: Bartholomeus · Orion | |||||