Dr. Konstantin Batygin, professor of Planetary Science at Caltech, made a joke that turned out to be true. In 2014, another Caltech professor, Mike Brown, brought an intriguing research paper to Batygin's attention. The paper described a peculiar planetary alignment in the outer solar system. While developing theoretical models to explain the paper's assertions, Brown and Batygin had a running gag, "We were like, okay, as a joke, let's put a planet in the outer solar system just to see what would happen." In this episode of Looking Up, Dean Regas chats with Dr. Batygin and gets the full story. Send us your thoughts at [email protected] or post them on social media using #lookinguppodcast

Find Us Online: Twitter: @lookinguppod @deanregas, Instagram: @917wvxu @deanregas, Tiktok: @cincinnatipublicradio @astronomerdean, Episode transcript: www.wvxu.org/podcast/looking-up More from Dean: www.astrodean.com

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