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

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 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.

The New Horizons Pluto mission will be the first mission to a binary object and will help us understand everything from the origin of Earth's moon to the physics of mass transfer between binary stars.