When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: NASA/Robert Lea (created with Canva) New research suggests that billions of years ago, ...

Back in the 1980’s, a now-defunct magazine called Science Digest held a contest to name Planet X — the still-undiscovered world that astronomers believed might lie out beyond Pluto. One of the best ...

Some 4.5 billion years ago, the dwarf planet Pluto was suddenly joined by a companion. For a brief period – perhaps only hours – they danced as if arm in arm before gently separating, a grand do-si-do ...

The love story between Pluto and Charon may have started with a kiss. A new study suggests the dwarf planet and its scarcely smaller moon likely came together in a collision that saw them conjoined ...

In the Feb. 23 issue of the journal Nature, a team led by Dr. Hal Weaver of the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Md., describes its discovery of two new moons ...

Finally, a family portrait of Pluto is beginning to emerge! For the first time ever, astronomers have captured two never-before-photographed moons orbiting Pluto. NASA's New Horizons spacecraft ...

Simulation of the moon Nix which orbits Pluto every 25 days. Here that's sped up to one orbit every two seconds, so we can see its chaotic spin more clearly. Little moons in the solar system have it ...

People might disagree on whether Pluto should be considered a planet or a dwarf planet but no one disagrees this world is peculiar. Everything about it is so weird, from its heart to the fact that ...

Recent images taken by the Hubble Space Telescope show that Pluto?s three moons are the same color, lending support to the theory that they were formed by a single, giant collision 4.6 billion years ...

Scientists using the Hubble Space Telescope have discovered what they say are two more tiny moons orbiting the planet Pluto, the first evidence yet that any object in the solar system beyond Neptune ...