When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration of confirmed dwarf planets and their moons. From left to right: Pluto (with ...

Pluto's days, though they drag on a bit at around 153 hours, are nothing compared to its years. Pluto's orbit takes 248 Earth ...

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 ...

Discover the epic 9-year journey of NASA’s New Horizons spacecraft as it races through the solar system to uncover Pluto’s ...

Two of Pluto's midsize moons may be made of the guts of its largest moon, Charon, new research suggests. New observations with the James Webb Space Telescope (JWST) show that the two moons, Nix and ...

Earth has a newly-discovered neighbor in the solar system. But the heavenly body – possibly a dwarf planet à la Pluto – isn't a frequent visitor. Located beyond Neptune, its extreme orbit ...

A new color movie combines more than 100 images taken by NASA's New Horizons spacecraft during the probe's historic Pluto flyby in the summer of 2015. The dwarf planet Ceres still holds pockets of ice ...

Today, the dwarf planet Pluto orbits the sun from the edge of our solar system and its surface temperature is an inhospitable negative 378 to negative 396 degrees Fahrenheit. But a new study suggests ...

Pluto in culture -- Pluto in history -- Pluto in science -- Pluto's fall from grace -- Pluto divides the nation -- Pluto's judgment day -- Pluto the dwarf planet -- Pluto in the elementary school ...