What Dark Matter Actually Is | KeShawn Ivory (dark.mattering)

In this episode of Curiosity Theory, hosts Dr. Dakotah Tyler and Justin Shaifer sit down with KeShawn Ivory, a soon-to-be PhD astrophysicist who studies the large-scale structure of the universe, for a deep conversation about dark matter, cosmology, and the invisible stuff that holds the universe together. The discussion moves from what dark matter actually is to how the universe became clumpy and lumpy instead of smooth, why the first atoms appeared minutes after the Big Bang, and how primordial black holes (a mountain's worth of mass packed into the size of a proton) became one of the more compelling candidates for what dark matter might be. Along the way, they get into how scientists detect something they can't see, what counts as evidence, and how scientific consensus actually moves. The conversation also dives into the hunt for dark matter through detection experiments, the role of skepticism in good science, what it means to know something, and KeShawn's favorite idea of all: that dark matter works as a framework for any force that is deeply impactful but hard to see, from race and systemic disparities in sociology to genomic dark matter in biology and trauma in art. Chapters 00:00:00 Intro and meeting KeShawn Ivory 00:02:30 The PhD as a credential and the path to science communication 00:08:55 What dark matter actually is 00:10:00 Why the universe is clumpy: large-scale structure 00:11:30 The early universe and the first atoms 00:20:30 The cosmic microwave background and the universe's baby picture 00:30:00 How we know dark matter is really there 00:33:30 Primordial black holes as a dark matter candidate 00:40:00 Dark stars and other exotic candidates 00:47:40 Healthy skepticism and how scientific consensus moves 00:53:00 Science, truth, and what it means to know something 00:59:00 The hunt for dark matter: WIMPs, axions, and detectors 01:08:00 How theory predicts the particles we look for 01:17:50 Astrosociology: dark matter as a lens on race and systemic forces 01:24:10 Dark matter as a storytelling tool in biology and art 01:26:18 Where to find Kishan and Black Space Week Follow us @curiositytheorypod @dr.starkid @mr.fascinate Guests Kishan Ivory (Dark Mattering) Visit our Merch Store https://www.curiositytheorypod.com/merch Join our Patreon / curiositytheory If you enjoy the conversation, subscribe and share Curiosity Theory with someone who's curious about the universe.