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lucia lucia

25 Aug 2006 12:31



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A fost exclusa? Eu am inteles doar a fost "degradata" in randul "planetelor pitice" . Au mai fost "primite" in randul planetelor inca trei corpuri ceresti: Ceres, Charon si Xena (2003UB313). 

"A planet is a celestial body that (a) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (b) is in orbit around a star, and is neither a star nor a satellite of a planet."