Pluto has strong atmospheric cycles: it snows on the surface; the snows sublimate and go back into the atmosphere each 248 year orbit.

Pluto is as far across as Manhattan to Miami, but its atmosphere is bigger than the Earth's.

I think when people see Pluto revealed by New Horizons, its satellite system, its complex surface, its atmosphere, I think they'll have a hard time saying 'That's not a planet' because it obviously will be, and I think most people are already coming to that opinion anyway, but I think that's really going to drive it home viscerally.

Pluto is just the brightest of the many objects in the Kuiper Belt. It's a fossil relic of the formation of our solar system.

I have July 14, 2015, emblazoned on my calendar. That's our arrival date at Pluto. We are now quite certain of that.

The Kuiper Belt is the largest structure in the solar system. We used to think Pluto was a misfit.