出典:Wiktionary
counter-earth (複数形 not attested)
counterearth
出典:Wikipedia
出典:『Wikipedia』 (2011/06/25 20:33 UTC 版)
The Counter-Earth is a hypothetical body of the Solar system first hypothesized by the presocratic philosopher Philolaus to support his non-geocentric cosmology, in which all objects in the universe revolve around a Central Fire. The Greek word "Antichthon" means "Counter-Earth."