It must have cleared all other celestial bodies, except its own moons, from its orbit.

Pluto may have been downgraded from full-planet status, but that doesn't mean it doesn't hold a special place in scientist's ...

In the time Pluto was found, classified as a planet and reclassified as a dwarf planet, it has not completed one orbit. One ...

The changing faces of Pluto| The predominant color of Pluto's surface is thought to result from ultraviolet radiation from the distant Sun breaking down methane on the planet's surface, leaving a dark ...

There’s a power shift on the horizon, and Pluto is here to show you where your potential for deep transformation lies ...

Famously, Pluto no longer met the criteria and was demoted to a dwarf planet. Things have been a bit of a mess since then — so is it time to redefine the planet? Astronomers were comfortable ...

The solar system has nine planets, but in 2006 the International Astronomical Union declared Pluto a dwarf planet, making the ...

In 2006, the International Astronomical Union (IAU) voted on the definition of a planet. Famously, Pluto no longer met the criteria and was demoted to a dwarf planet. Things have been a bit of a mess ...

After a year and a half of moving back and forth between Capricorn and Aquarius, Pluto makes its final entrance into boundary ...

From afar, Pluto once seemed boring and dead. After all, the dwarf planet is only two-thirds the size of our moon and resides more than 30 times farther out from the sun than does Earth.

The new season's forecast is frightening, and we should all take a cue from Sagittarius on how to respond. Read our queer ...