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NASA Chief Jim Bridenstine – a politician who’s probably seen one or two episodes of “Cosmos” – has officially declared Pluto a planet again. His reasoning: that’s the way he learned it in high school ...

You know what a planet is, right? A big round thing that orbits a star. Uh, not so fast. You know what a planet is, right? A big round thing that orbits a star. Uh, not so fast. The surprisingly ...

Although Seeing in the Dark doesn't directly discuss Pluto, it does celebrate the joy of observing planets. Viewers who watch the show may wonder what happened to Pluto in 2006 and whether any of the ...

Pluto was downgraded to dwarf planet over 10 years ago, but it's something that still seems so damn unfair. How do you take away its planet status after 76 years? On the other hand, science is ...

NASA's New Horizons spacecraft captured this high-resolution enhanced color view of Pluto that is inserted beneath the Short Wave logo. The image combines blue, red and infrared images taken by the ...

Pluto may have lost its status as a full-fledged planet in 2006, but that doesn't mean it's a joke of a world this April Fools' Day and the folks behind Pluto TV want to make that clear. On April 1, ...

Is Pluto a planet, as generations of schoolchildren learned? Or is it really a dwarf planet, as astronomy’s official governing body has determined? NASA administrator Jim Bridenstine says it’s the ...

You sure that's not a planet? Okay, whatever you say. Sorry, not everybody gets to be a planet. I know, I know. It’s not fair. But life’s not fair either, so we ...

Named after the Roman King of the underworld, Pluto has served as a surprising source of conflict in the astronomical community and for lovers of space everywhere. Growing up, I was taught in school ...

We discovered something: Pluto was different! Pluto was discovered because Neptune’s orbit showed an anomaly that indicated that there was something else out there. So they looked and eventually Clyde ...