Exploring the Largest Objects in the Universe episode artwork

EPISODE · Aug 19, 2026 · 27 MIN

Exploring the Largest Objects in the Universe

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

Today, we explore the colossal scale of the largest objects in our observable Universe. It's all about size, not mass. While black holes and neutron stars are incredibly dense, they don't make the cut on our list of massive objects. Join us as we delve into the vastness of space and discover just how 'huge' things can get. Timeline: 00:00 True Scale of the Largest Objects in the Universe01:34 Jupiter02:43 ROXs 42Bb07:12 The Largest Stars09:42 Sirius A10:42 Pollux11:22 Arcturus12:50 Betelgeuse14:29 Stephenson 2-1816:21 Ultra-massive Black Hole (TON 618)17:48 Phoenix A*19:13 The Milky Way20:47 Andromeda20:57 IC 110121:17 Quipu22:38 Hercules-Corona Borealis Great Wall Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community. The What If BookArticles Join the CommunityDiscordWhatsAppInstagramTwitter/XFacebook Support What IfMerchJoin this channel for exclusive perksPatreon More from UnderknownAperture – Philosophy & PsychologyHow to Survive – Survival Science Brand partnerships & collaborations: [email protected] Produced by Underknown: underknown.com 00:00: True Scale of the Largest Objects in the Universe01:34: Jupiter02:43: ROXs 42Bb07:12: The Largest Stars09:42: Sirius A10:42: Pollux11:22: Arcturus12:50: Betelgeuse14:29: Stephenson 2-1816:21: Ultra-massive Black Hole (TON 618)17:48: Phoenix A*19:13: The Milky Way20:47: Andromeda20:57: IC 110121:17: Quipu22:38: Hercules-Corona Borealis Great Wall #universe #space #science #cosmos #comparison #documentary #largestobjects #observableUniverse #massiveobjects #stars #galaxies See show notes: https://inlet.fm/what-if-science-theories-possibilities/episodes/69d93b48120eac990d4f96a8 Learn more about your ad choices. Visit podcastchoices.com/adchoices

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Exploring the Largest Objects in the Universe

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