"Is this all real? Or has this been happening inside my head?"
The topic of this article is of a real-life subject that has been mentioned "in-universe" in a canon source. The Harry Potter Wiki is written from the perspective that all information presented in canon is true (e.g., Hogwarts really existed), and, as such, details contained in this article may differ from real world facts. |
- " [...] and it's Io that's got the volcanoes."
- — Hermione Granger correcting Ron Weasley's essay about Jupiter's moons[src]
Io is one of Jupiter's moons. This natural satellite has many volcanoes. It is studied in Astronomy class, at Hogwarts School of Witchcraft and Wizardry.
Appearances
- Harry Potter and the Order of the Phoenix (First mentioned)
Astronomy | |||||
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Professors: Satyavati Shah · Aurora Sinistra | |||||
Astronomy at Hogwarts: Astronomy classroom · Astronomy Corridor · Astronomy Club · Astronomy department · Astronomy homework meeting · Astronomy reading room · Astronomy Room · Astronomy Stairs · Astronomy Tower | |||||
Astronomers: Aurora Sinistra · Copernicus · George von Rheticus · Perpetua Fancourt · Hesper Starkey | |||||
Objects: Astrolabe · Globe of the Moon · Lunascope · Moon chart · Orrery · Sextant · Star chart · Telescope | |||||
Planets: Jupiter · Mars · Mercury · Neptune · Pluto · Rogue planets · Saturn · Uranus · Venus | |||||
Satellites: Callisto · Europa · Ganymede · Io · Moon | |||||
Constellations: Aquila · Bartholomeus · Cetus · Crater · Dark cloud constellations · Orion · Ursa Major | |||||
Other topics: Black holes · Cosmic ages · Dark energy · Dark matter · Eclipse · Lunar phases · Meteor showers · Space weather · Wormholes |