Pluto isn’t a lifeless rock it’s a world filled with towering mountains and shifting ice plains. This video dives into the ...

There’s been a fierce debate over the past two decades about the status of the distant icy world of Pluto after it was ...

Two dwarf planets were added to Aroostook's scaled solar system along Route 1, but at the size of a marble, visitors might ...

The problem with Pluto isn’t its planetary or nonplanetary status—it’s our insistence on declaring the world must be one or the other ...

Nearly six years after the release of The Last of Us Part 2, a player uncovers a subtle detail that sparks fresh discussion among fans online.

A gradual dimming and brightening when a star passed behind it suggested the mini-Pluto was wrapped in a thin layer of air.

Two decades ago, the International Astronomical Union—which defines and names celestial bodies—redefined the criteria for ...

Astronomers have detected the chemical fingerprint of a frozen, water-rich planetary fragment being devoured by a white dwarf star, offering the clearest evidence yet that icy, life-delivering objects ...

The frigid temperatures and weak surface gravity of the small bodies has long caused astronomers to believe they aren’t capable of retaining atmospheres — with the exception of Pluto, which has a thin ...

A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere. That would make it the solar ...

If confirmed, the rock would become just the second world past Neptune in our solar system to host an atmosphere.