What, Exactly, Is a Planet?

Near­ly 2,500 astronomers from 75 coun­tries gath­ered here Mon­day to come up with a uni­ver­sal def­i­n­i­tion of what qual­i­fies as a plan­et and pos­si­bly decide whether Plu­to should keep its plan­et status.

Near­ly 2,500 astronomers from 75 coun­tries gath­ered here Mon­day to come up with a uni­ver­sal def­i­n­i­tion of what qual­i­fies as a plan­et and pos­si­bly decide whether Plu­to should keep its plan­et status.

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