A (hypothetical) second Earth on the opposite side of the sun.
单词 | θ499 |
释义 | the world > the universe > planet > primary planet > earth > [noun] > antichthon (2) antichthon1660 A (hypothetical) second Earth on the opposite side of the sun. counter-earth1837 An opposite or secondary Earth, in the Pythagorean system: cf. antichthon, n. |
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