This is what Hubble can see.
Its size and orbit are the main reasons it should be demoted from planet to "something else."
They should just demote Pluto and end the debate. Or grandfather Pluto with an asterisk that it's not really a planet, and end the debate.
This is what Hubble can see.
Its size and orbit are the main reasons it should be demoted from planet to "something else."
There certainly has to be a dividing line somewhere between planet and "smaller stuff" but why exclude Pluto?
I think the thing to do is say that objects larger than Pluto are planets and objects smaller than Pluto are not.
It is certainly subjective but any dividing line will have to be subjective.