For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets, that ...

Charon also has an abnormally circular orbit of Pluto, with its orbital eccentricity (a value between 0 and 1, where 0 is a perfect circle and 1 is an open-ended parabola) only being about 0.000161.

An curved arrow pointing right. NASA's New Horizons spacecraft took us to Pluto for the first time in July 2015. Scientists are astonished by the incredible features they've observed on the dwarf ...

But on Charon, Pluto's nearest moon, they found this most familiar of geological features. There was more, on Pluto itself, that recalled the American mid-west. Dark streaks on Pluto's plains ...

So today at 3 p.m. ET we get to see the best-ever views of Pluto and its moons Charon, Hydra, and Nix. While the world awaits the big reveal, below are the types of images you can expect to see ...

This is the story of Pluto, a planet that has been removed from the solar system and is wandering alone in the vastness of space, and its satellite, Charon, which hovers around Pluto.