This story appears in the July 2015 issue of National Geographic magazine. Small, cold, and absurdly far away, Pluto has always been selfish with its secrets. Since its discovery in 1930 ...

An curved arrow pointing right. NASA released this video made from over 100 high-resolution images taken of the former planet Pluto. It gives us a never-before-seen view of the details on the surface.

Sputnik Planitia is a white basin measuring 750 by 1,250 miles near Pluto's equator that was discovered during the flyby. Although the dwarf planet is covered in an ice shell, that thins ...

It detected for the first time traces of carbon dioxide and hydrogen peroxide on the surface of Charon, which is about half ...

The flyby, set to occur in the early morning of January 1, 2019, will be the second for New Horizons, following its historic 2015 Pluto flyby. It will also be the furthest flyby from Earth ever ...

Although a thin atmosphere was detected on Pluto by the New Horizons probe during its 2015 flyby, scientists believed at the time that Charon was simply too small to maintain an atmosphere.

Charon is large in size relative to Pluto, and is locked in a tight orbit with the dwarf planet. A new simulation suggests how it ended up there. By Jonathan O’Callaghan Some 4.5 billion years ...

A group of New Horizons scientists took to Reddit on July 14 to answer questions about the Pluto flyby, and it quickly became clear that the preliminary data holds some curiosities. For starters ...

As science teams and researchers spent 2017 pouring through the wealth of data returned by the New Horizons spacecraft during its historic flyby of the dwarf planet Pluto in July 2015, the ...

Pluto and Charon’s meet-cute may have started with a kiss. New computer simulations of the dwarf planet and its largest moon suggest that the pair got together in a “kiss-and-capture ...