5min 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 Biggest New Thing Ever Found in the Solar System

"We found a lot of moderately big hyper belt objects. I'll say moderately big to me is a 500 kilometer object in the sky, which is kind of cool" "I still get a charge every time i find one of these new ones," he says. 'It's pretty clear that this thing was a planet'

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