In Roman mythology, Pluto is the god and ruler of the dead. For a return mission to the dwarf planet, Howett and her ...

Pluto, once considered the ninth planet, remains one of the most mysterious objects in our solar system. Its icy surface and ...

But long before the Pluto “controversy,” other objects moved on and off the official list of solar system planets. Indeed, a kindergartener in the early 1800s would have learned that Ceres was ...

New data from the James Webb telescope reveals that Pluto's strange atmospheric haze controls its climate, surprising ...

Since 1930, we’ve discovered that Pluto is one of the solar system’s most fascinating worlds. It features blue skies, red snow, glaciers made of frozen nitrogen, and dunes made of frozen ...

Though Pluto has formally been considered a dwarf planet for almost two decades, it still has many lessons left for planetary scientists — including hints about how the solar system formed.

Pluto has taken a special place in planetary scientist Alan Stern's mind since 1988. That's when he first began pushing NASA to send a spacecraft to what was then the ninth planet in our solar system.