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Re: Pluto (was: Re: Naming days of the week and months of the year????)

From:Weiben Wang <wwang@...>
Date:Friday, April 27, 2001, 17:07
On Fri, 27 April 2001, The Gray Wizard wrote:

> 1) It must (directly) orbit a star > > 2) It must be small enough that it has not been undergoing internal nuclear > fusion (i.e. it is not a star or star-like object) > > 3) It must be large enough that its self-gravity gives it the general shape > of a sphere. > > However, under these rules, the asteroid Ceres could qualify as a planet. In > the final analysis, the designation of "planet" is more a historical issue > than a scientific one.
Kind of like the designation of "language." ;) -WW