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In ancient Greek religion and mythology, Pluto (Greek: Πλούτων, Ploutōn) was the ruler of the Greek underworld. The earlier name for the god was Hades , which became more common as the name of the underworld itself.
Similarly, Eris, the malevolent "Goddess of Discord and Chaos", is the main antagonist in the DreamWorks 2003 animated movie Sinbad: Legend of the Seven Seas against Sinbad and his allies. The dwarf planet Eris was named after this Greek goddess in 2006. [103] In 2019, the New Zealand moth species Ichneutica eris was named in honour of Eris. [104]
Only one of them – Pluto – has been observed in enough detail to verify that its current shape fits what would be expected from hydrostatic equilibrium. [53] Ceres is close to equilibrium, but some gravitational anomalies remain unexplained. [54] Eris is generally assumed to be a dwarf planet because it is more massive than Pluto.
The earliest forms of these symbols appear in Greek papyrus texts of late antiquity. The Byzantine codices in which many Greek papyrus texts were preserved continued and extended the inventory of astronomical symbols. [2] [3] New symbols have been invented to represent many planets and minor planets discovered in the 18th to the 21st centuries.
When Pluto's significance was changed to dwarf planet, mnemonics could no longer include the final "P". The first notable suggestion came from Kyle Sullivan of Lumberton, Mississippi , USA, whose mnemonic was published in the Jan. 2007 issue of Astronomy magazine: "My Violent Evil Monster Just Scared Us Nuts". [ 3 ]
For instance, for a large portion of names ending in -s, the oblique stem and therefore the English adjective changes the -s to a -d, -t, or -r, as in Mars–Martian, Pallas–Palladian and Ceres–Cererian; [note 1] occasionally an -n has been lost historically from the nominative form, and reappears in the oblique and therefore in the English ...
Pluto: 1930 2006 Dwarf planet: Following its discovery in 1930, Pluto was considered the ninth planet. Numerous scientific discoveries in the 1990s and early 2000s placed doubt on this classification, and after the discovery of Eris, which was thought to be larger than Pluto, the International Astronomical Union met to determine a definition of ...
In ancient Roman religion, Ceres (/ ˈ s ɪər iː z / SEER-eez, [1] [2] Latin:) was a goddess of agriculture, grain crops, fertility and motherly relationships. [3] She was originally the central deity in Rome's so-called plebeian or Aventine Triad, then was paired with her daughter Proserpina in what Romans described as "the Greek rites of Ceres".