2min chapter

Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas cover image

11 | Mike Brown on Killing Pluto and Replacing It with Planet 9

Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas

CHAPTER

The Definition of a Planet in the Solar System

The definition of a planet in the solar system is that you have to be an orbit around the sun. So this says, people get confused by this one. The only motivation on for this argument is to deal with pluto. It's because the definition is both poorly worded and a bad idea to begin with.

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