An curved arrow pointing right. See what's so weird about Pluto and its moons. Produced by Emmanuel Ocbazghi. Original reporting by Jessica Orwig. Follow BI Video: On Facebook More from Science ...

Out past Neptune are countless small icy and rocky bodies called Trans-Neptunian Objects (TNOs), and many of these have moons ...

New research suggests that billions of years ago, Pluto may have captured its largest moon, Charon, with a very brief icy ...

Nitrogen is heated and cooled as Pluto rotates. A New Horizons image of Pluto and its moon Charon revealed more surprises about the dwarf planet and its orbiting moon. Click on the hand to see why ...

PhotoPhoto of Pluto and its moon Charon, as seen with the Hubble Space Telescope in 1994. In the same part constellation, Orion, as Betelgeuse but even farther away is the Orion Nebula ...

Ganymede, Jupiter's largest moon and the solar system's largest, is bigger than Mercury and the dwarf planet Pluto, with a diameter of 5,268 kilometers.

In the earliest days, the Sun and the Moon were counted in ... And if you are still a Pluto-is-a-planet holdout, like we were, [Michael]’s argument that counting all the Trans-Neptunian Objects ...

This year also marks the 10th anniversary of Pluto's first dedicated flyby mission. NASA’s New Horizons spacecraft zoomed by the small world and its moons, providing the first high-resolution ...

An curved arrow pointing right. See what's so weird about Pluto and its moons. Produced by Emmanuel Ocbazghi. Original reporting by Jessica Orwig. Follow BI Video: On Facebook More from Science ...