I blame the Pluto people for that. (This is what a debate among astronomers talking ... Maybe let’s start with the criteria for planet status. Philip Metzger: In 2006, the IAU decided, number ...

Elon Musk, under the username "Kekius Maximus," has joined William Shatner in advocating for Pluto's reclassification as a ...

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

The major planet roster has changed over the years, but Pluto is still beloved by the science community and regularly makes headlines. In July 2022, the National Aeronautics and Space ...

In a 2014 debate at the Harvard-Smithsonian Center ... astronomers voted to “demote” Pluto to dwarf planet status. These were astronomers at the meeting, not planetary scientists — a ...

On July 11, 2012, a fifth moon, Styx, was discovered (with an estimated width of 6 miles or 10 km), further fueling the debate about Pluto's status as a planet. The leading hypothesis for the ...

Pluto, humanity's favorite dwarf planet, is getting some high-profile allies. "Star Trek" actor William Shatner wants to use ...

A legendary actor has taken a surprising turn to the right and is calling on President Trump to make Pluto great again.

(Correction: An earlier version of this story misstated how far Pluto is from the sun. The correct number is 3.7 billion miles.) What was discovered in Flagstaff, Arizona, and killed off in Prague?