A second proposal


As I predicted, the new model of the solar system is being widely criticized by astronomers.

The proposal- which would promote the largest asteroid, Ceres, and Pluto's largest moon, Charon, to the status of planets, as well as recently-discovered 2003 UB313- would be predicated on a definition of the word "planet" under which literally dozens and perhaps ultimately a hundred bodies in the outers solar system would probably qualify.

So now, a second proposal will be considered by the IAU General Assembly on Thursday: demote Pluto- and presumably Charon and 2003 UB313- to the status of something less than full planets.

The secondary "dwarf planet" status was part of the original proposal. Apparently the second proposal would make a distinction between "planets" and "dwarf planets," rather than treating the latter category as a subset of the former.

And so, the adventure continues...

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