The Fascinating Hunt for a Mysterious 9th Planet

Dr Brian Keating April 20, 2025
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Dr Brian Keating

@drbriankeating

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🧠Our Universe’s Brightest Minds🧠 Every week I provide you with long-form interviews with a brilliant thought-leader or a deep-dive into a fascinating STEM subject. I'm the Chancellor's Distinguished Professor of Physics at UC San Diego where my team & I study the origin & evolution of space, time, & matter. Scientists are obligated to explain their work in simple terms to non-experts. I think scientifically and I will teach you how to, too. I wrote INTO THE IMPOSSIBLE & LOSING THE NOBEL PRIZE, which was selected as a 'Best Science Book' at Science Friday and one of the best non-fiction books of all time according to Amazon. I'm on a mission to magnify curiosity, stoke imagination, & inspire minds of all ages.

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As a listener of Dr. Brian Keating, you get a special 20% off discount. 👉 Head over to The Economist's website at http://www.economist.com/Keating to get started. What really happened during the controversy over the discovery of Haumea? Why was Pluto actually demoted? And is there a hidden Planet Nine lurking in the outer solar system? I’m joined today by none other than the Pluto Killer himself, Mike Brown. Mike is an astronomer and professor of planetary astronomy at the California Institute of Technology (Caltech). His groundbreaking discoveries of dwarf planets like Eris, Haumea, and Makemake shook up the astronomy world and led to the controversial redefinition of what constitutes a planet. In this gripping episode of Into the Impossible, Mike opens up about the ethical challenges he faced in his career, including the Haumea data theft that caused a massive controversy, the truth behind the demotion of Pluto, and the ongoing search for Planet Nine. — Key Takeaways: 00:00 Intro 01:26 How Mike killed Pluto 03:50 Defining planets 08:48 Being an astronomer 13:31 Controversy over the discovery of Haumea 29:56 The search for Planet Nine 39:14 Balancing high and low-risk research 43:43 Did Neil deGrasse Tyson kill Pluto? 44:34 Planet Nine’s effects on the solar system’s evolution 46:47 The relevance of exoplanets 52:52 Outro — Additional resources: ➡️ Learn more about Mike Brown: 💻 Website: https://mikebrown.caltech.edu/ 📚 How I Killed Pluto and Why It Had It Coming: https://a.co/d/9jQp3nt ➡️ Follow me on your fav platforms: ✖️ Twitter: https://twitter.com/DrBrianKeating 🔔 YouTube: https://www.youtube.com/DrBrianKeating?sub_confirmation=1 📝 Join my mailing list: https://briankeating.com/list ✍️ Check out my blog: https://briankeating.com/cosmic-musings/ 🎙️ Follow my podcast: https://briankeating.com/podcast — This channel is dedicated to all those who want to explore the universe within and beyond the known. Make sure to subscribe so you never miss an episode! #intotheimpossible #briankeating #MikeBrown