What if Planet X Was Actually Real? episode artwork

EPISODE · Jul 1, 2026 · 4 MIN

What if Planet X Was Actually Real?

from What If: Science, Theory, and Possibilities · host What If

Over the past century, astronomers have speculated about the existence of a mysterious 9th planet lurking in the outer reaches of our Solar System. Although we've never directly observed the elusive Planet X, researchers keep finding more strange phenomena that seem to support its existence. Scientists believe that Planet X, also referred to as Planet 9, is about 17 times bigger than Earth, and made entirely out of gas. Support us on Patreon. Get the What if book. Join this channel to get access to perks: YouTube Membership. Interested in sponsoring our episodes or collaborating? Email us: [email protected] Our other channels: How to Survive Aperture T-shirts and merch: Shop What If Newsletter: What If Newsletter What If elsewhere: Discord WhatsApp Instagram Twitter Facebook Produced by Underknown. #PlanetX #Planet9 #SolarSystem #astronomy #space #science #gasgiant See show notes: https://inlet.fm/what-if-science-theories-possibilities/episodes/69967d729110982b25a9b189 Learn more about your ad choices. Visit podcastchoices.com/adchoices

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What if Planet X Was Actually Real?

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