Why was Pluto reclassified as a dwarf planet? One might think that it’s purely a matter of size. Mercury, the smallest of the ...

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary ...

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto turns out to have as much complexity as Mars or Earth, so much so that I ...

Pluto did not meet all three criteria the IAU determined were necessary to be considered a planet: The body must orbit its host star, just as Earth and Jupiter orbit the sun. It is large enough to ...

Breaking news shocked Villanova’s campus last Saturday, March 15. Everyone remembers exactly where they were when they ...

An amateur astronomer discovered Pluto 95 years ago today. The former planet will complete an orbit in another 153 years. On February 18, 1930, just two weeks after his 24th birthday, Clyde ...

Pluto TV offers 250+ live-streaming channels, covering news, sports, reality TV, and more. Favorite channels include Flicks of Fury, Star Trek, Stories by AMC, and Britbox Mysteries. Classic TV ...

The IAU defends the definition based on Pluto’s orbit. Unlike other planets that have a more or less circular, equatorial orbit around the sun, Pluto’s is sharply inclined and highly ...

Pluto was discovered 95 years ago on Feb. 18 ... the Lowell Observatory said. The body must orbit its host star, just as Earth and Jupiter orbit the sun. It is large enough to be mostly round.