Why our solar system's moons are named after lovers and literary sprites
In short: The names of our celestial neighbors are rarely random. From Shakespearean fairies to Greek sea deities, the naming of moons follows strict, often poetic rules. But these conventions aren't just for show; they are deliberate systems designed to organize the chaos of discovery into a coherent cosmic map.
Naming authority shifted significantly in 1973 when the International Astronomical Union's committee for Planetary System Nomenclature became the Working Group for Planetary System Nomenclature (WGPSN). Before this, naming was often left to the discoverer or delayed for centuries. For example, Titan was discovered in 1655 but wasn't named until 1847. This lack of standardization meant that for a long time, many satellites were simply referred to by numbers, such as 'Jupiter I' or 'Jupiter II'.
Today, the WGPSN enforces specific mythological and literary themes based on the parent planet. Jupiter's moons are named after the lovers and descendants of Zeus, while Saturn's inner moons follow a Greco-Roman theme of giants and titans. For the outer moons of Saturn, the IAU expanded this in 2004 to include Norse, Gallic, and Inuit giants. Uranus presents a unique literary exception: its moons are named after characters from William Shakespeare's plays and Alexander Pope's 'The Rape of the Lock,' a choice made by John Herschel to reflect Uranus as a god of the sky and air.
The naming process also incorporates orbital mechanics. For 'irregular' satellites, a specific linguistic convention is used: prograde moons end in 'a', retrograde moons end in 'e', and exceptionally inclined moons end in 'o'. This system was formalized in 1975 following a proposal by German philologist Jürgen Blunck. While some figures, like Carl Sagan, protested these names as 'extraordinarily obscure,' the IAU maintained the system to ensure that every new discovery fits into a structured, navigable taxonomy of the heavens.
Opens the Intellect+ feed with this card first. Swipe up for the next one.
Sources
- Summary by Intellect · source: Naming of moons
To cite this card, link to https://intellectplus.co.uk/app/space-naming-of-moons.
How we source, check and correct cards: Editorial standards.
General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.
Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?
Related
More in Moons · More in Space · Latest · A–Z · All topics
