[Steely Tom]

During one of the briefings I heard one of the lead scientists running the mission call it a planet and then say, “You heard me, it’s a planet”.

I guess it's not "settled science," then.

I mean, since a scientist said it.

[Textide]

Alan Stern's his name. Here's an article from 2011 where he defends Pluto's status as a planet.

http://www.space.com/12710-pluto-defender-alan-stern-dwarf-planet-interview.html