85% of All Matter Is Invisible | What If It's Trillions of Ancient Black Holes?

Hey guys! We’re now live on Spotify🎧 Listen here: https://open.spotify.com/show/6awM6sh... Most of the matter in the universe has never been seen. It holds every galaxy together, and no detector has ever caught a single piece of it. Tonight we follow one real, unproven idea: that it is black holes older than atoms, made in the first instant of time. If so, what has already crossed our solar system? From a crowded galaxy cluster in 1933 to a burned observatory, the orbit of Mars and the first trillionth of a second, the trail runs one clue at a time. Settle in and let this long, quiet night keep you company. Subscribe to The Last Astronomer if you like to end the day with a big question about the sky. CHAPTERS 0:00 Introduction 2:00 The Eighty-Five Percent 15:00 The Stars That Should Have Flown Away 28:00 Proof Written in a Collision 42:00 An Answer From the First Second 55:00 Smaller Than an Atom, Heavier Than a Mountain 1:08:00 The Hunters of the 1990s 1:21:00 One Night on Andromeda 1:34:00 The Visitor Every Decade 1:47:00 Black Holes in the Room 2:00:00 Older Than Protons 2:13:00 Ripples From Colliding Holes 2:27:00 The Last Flash 2:39:00 A Black Hole Beyond Neptune 2:53:00 The Rival Answers 3:07:00 A Universe Built on Holes 3:19:00 The Telescope That Just Left SOURCES Planck 2018 results VI: Cosmological parameters — https://arxiv.org/abs/1807.06209 NASA Chandra: Direct Proof of Dark Matter (Bullet Cluster) — https://chandra.si.edu/press/06_relea... Carr & Kühnel, Primordial Black Holes as Dark Matter (Annual Review) — https://arxiv.org/abs/2006.02838 Kavli IPMU: Subaru tests tiny primordial black holes — https://www.ipmu.jp/en/20190402-Primo... Niikura et al., Subaru/HSC Andromeda microlensing — https://arxiv.org/abs/1701.02151 OGLE: 20 years of LMC microlensing — https://arxiv.org/abs/2403.02398 Bird et al., Did LIGO detect dark matter? — https://arxiv.org/abs/1603.00464 MIT News: A wobble from Mars could be sign of dark matter — https://news.mit.edu/2024/mars-wobble... Tran et al., Close encounters of the primordial kind — https://arxiv.org/abs/2312.17217 APS Physics: Could Planet Nine Be a Black Hole? — https://physics.aps.org/articles/v13/s97 Nikhef: KM3NeT detects highest energy neutrino — https://www.nikhef.nl/en/news/km3net-... UMass Amherst: Traces of an exploding black hole? — https://www.umass.edu/natural-science... — Disclaimer: The Last Astronomer makes speculative science films for rest and relaxation. Every scenario on this channel is hypothetical and is presented as one; none of it is a forecast, a prediction, or a warning. The physics used to follow each scenario is drawn from published research, space agencies, and recognized scientific institutions, and estimates are described as estimates. This channel does not report the news. Viewer discretion is advised. #PrimordialBlackHoles #WhatIsDarkMatter