A Chthonian planet (sometimes misspelled Cthonian), is a gas giant with its hydrogen and helium atmosphere stripped away due to its closeness to its star. The remaining rocky or metallic core would resemble a terrestrial planet in many respects. A gas giant is a large planet that is not composed mostly of rock or other solid matter. ... General Name, Symbol, Number Hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1 (IA), 1 , s Density, Hardness 0. ... General Name, Symbol, Number Helium, He, 2 Atomic weight 4. ... Atmosphere is the general name for a layer of gases that may surround a material body of sufficient mass. ... The Pleiades star cluster A star is any massive gaseous body in outer space just like the Sun. ... A terrestrial planet or telluric planet is a planet which is primarily composed of silicate rocks. ...

Osiris is an example of a planet that is in the process of having its atmosphere stripped away, though it is not itself a Chthonian planet nor is it expected to become one in the near future. Some scientists suggest that Mercury is a Chthonian planet, but other than this possibility no known Chthonian planets have been discovered. Atmospheric characteristics Atmospheric pressure trace Potassium 31. ...

The word chthon (as in chthonic deity) is from Chthonia, which means "Of the Earth" in Greek. There are at least three different Chthonias in Greek mythology, and they are all closely associated with the goddess Demeter. The word Greek has a number of meanings relating to Greece, including: Architecture of Ancient Greece Art in Ancient Greece Greek alphabet Greek colonies Cuisine of Greece Greek salad Ethnic Greek Greco-Turkish relations Greece The Greek People Greek-Americans History of Greece History of Mycenaean Greece History of Ancient... Greek mythology comprises the collected legends of Greek gods and goddesses and ancient heroes and heroines, originally created and spread within an oral-poetic tradition. ... Dêmêtêr (or Demetra) (DEH-MEH-ter) (mother-goddess or perhaps distribution-mother) is the Greek goddess of agriculture, the pure nourisher of youth and the green earth, the health-giving cycle of life and death, and preserver of marriage and the sacred law. ...