Showing posts with label Jupiter. Show all posts
Showing posts with label Jupiter. Show all posts

Jul 24, 2015

Pluto and the Naming of the Planets

With all the publicity surrounding the recent photos of Pluto, Seems fitting to look at it and the other (real) planets and how they received their names. Pluto is the largest and second-most-massive known dwarf planet in the Solar System and the ninth-largest and tenth-most-massive known object directly orbiting the Sun.

It had been discovered many times by astronomers, who did not realize what they found. It was discovered 'for real' in 1930 by Clyde Tombaugh, and was originally considered the ninth planet from the Sun. After 1992, its status as a planet fell into question following the discovery of several objects of similar size, in particular Eris, which is 27% more massive than Pluto. This led the International Astronomical Union to define the term planet formally for the first time. This definition excluded Pluto and reclassified it as a member of the new "dwarf planet" category. The other dwarf planets are Ceres, Eris, Haumea, and Makemake (sic).

The tradition of naming planets after mythological gods was passed continued after Roman names for the five extraterrestrial planets they were aware of.
  • Earth is the only planet not named for a mythological god.
  • Pluto, although no longer a "real" planet is named after the god of the underworld. The name was proposed by Venetia Burney, a then eleven-year-old schoolgirl in Oxford, England, who was interested in classical mythology.
  • Saturn is named after the Roman god of agriculture. It followed the Greek designation for Cronus. In modern Greek, the planet retains its ancient name Cronus—Κρόνος: Kronos.
  • Neptune was named after the god of the sea. It got its name thanks to the fact that it has a blue color.
Incidentally, many languages have their own name for Earth, such as ‘terra’ in Portuguese, ‘dünya’ in Turkish and ‘aarde’ in Dutch. However, the common thread in all languages is that they were all derived from the same meaning, which is ‘ ground’ or ‘soil’. The modern English word and name for our planet Earth likely extends back more than 1,000 years. The name was also found in early English translations from the bible.