Neil deGrasse Tyson was not the main guy behind demoting Pluto. Mike Brown, the guy at CalTech whose math implies the existence of the so-far hypothetical ninth planet, was. He even wrote a book about it: How I Killed Pluto, and Why It Had It Coming
Book recommendation time! If you or anyone else perusing this thread is curious, there's a terrific book by the astronomer Mike Brown, whose work was significantly responsible for the reclassification, called How I Killed Pluto and Why It Had It Coming. It's an engaging, approachable read if you're at all curious about the whole thing. Great insight into the life of a working scientist (including things like trying to data mine his newborn daughter's behavior) and the workings of the scientific community.
If you're really interested in it, this book is a good one. It's written by Mike Brown, whose team discovered Eris, another dwarf planet that turned out to be bigger than Pluto.
Basically, people who insist that Pluto is still a planet are taking a big old dump on his life's work.
For more on the "screwing over" of Pluto, you might want to check out Mike Brown's book How I Killed Pluto and Why It Had It Coming. He's an astronomer who was investigating the Kuiper Belt objects whose discovery blurred the line between "Planet" and "Not-Planet" so heavily that the IAU had to call Pluto's planethood into question. It's sort of half-memoir half-pop-science, and it does quite a good job of explaining the circumstances which led to Pluto's demotion while also telling an (in my opinion) entertaining story about astronomy.
It's a good read:
https://www.amazon.com/How-Killed-Pluto-Why-Coming/dp/0385531109
I always wonder how Michael E. Brown feels about Tyson getting all the credit (and blame) for Pluto's reclassification.
Planet = wanderer.
Technically, if you're an ancient greek, Grubby is mostly linguistically correct, the Moon is not a Fixed Star. Grubby = Ptolemaic astronomer confirmed!
If you're not being technical, it's a crazy-ass Mary Poppins metaphor for picking an unneeded teamfight, what the heck do you want?¯\_(ツ)_/¯
And if you're concerned about proper English language: >The problem with defending the purity of the English language is that English is about as pure as a cribhouse whore. We don't just borrow words; on occasion, English has pursued other languages down alleyways to beat them unconscious and riffle their pockets for new vocabulary. --James Nicoll
The only REAL reason to really object is if you're concerned that Grubby is secretly lobbying for Pluto to be re-instated as a Planet. A decent book with a great title lays out the argument against the closet crypto-plutonians, though: How I Killed Pluto and Why It Had It Coming
You give Tyson too much credit.
It was the International Astronomer's Union that set the current definition of a planet. Astronomer Mike Brown had a lot to do with it.
No. See http://www.amazon.com/How-Killed-Pluto-Why-Coming/dp/0385531109 for full detail
Read "How I Killed Pluto and why it had it Coming" by Mike Brown. Great book. http://www.amazon.com/How-Killed-Pluto-Why-Coming/dp/0385531109
Speaking of Pluto and its nomenclature, this is a fantastic book about the "demotion" of Pluto.
What exactly is a planet is not as clear-cut as you might think. The book "Why I killed Pluto and why it had it coming" http://www.amazon.com/How-Killed-Pluto-Why-Coming/dp/0385531109 goes into a lot of detail about it.