Please join my mailing list here 👉 https://briankeating.com/yt to win a meteorite 💥 What if 85% of the universe is invisible—and the one experiment claiming to have found it is wrong? For nearly three decades, Italian physicists have claimed their DAMA/LIBRA experiment detected the elusive particles that make up dark matter—the mysterious substance holding galaxies together. Yet no one else has ever confirmed it. Join Brian Keating, UCSD cosmologist and host of The INTO THE IMPOSSIBLE Podcast, as he visits Kaixuan Ni and his team—scientists building the world’s most sensitive detectors deep underground—to uncover: • ⚛️ How detectors using liquid xenon can “fingerprint” single atomic collisions. • 💡 Why dark matter’s “heartbeat” signal divided physicists for 30 years. • ☢️ How dark-matter detectors are now being repurposed to detect nuclear weapons and monitor reactors remotely. • 🌞 The shocking discovery of solar neutrinos and ultra-rare nuclear decays—phenomena rarer than the age of the universe itself. This is the invisible architecture of reality—where cosmology meets particle physics, and theory meets obsession. 00:00 – The Invisible Force Fritz Zwicky’s 1930s discovery and Vera Rubin’s confirmation of dark matter’s cosmic mystery. 00:40 – Galaxies That Shouldn’t Exist Why stars on the galaxy’s edge spin too fast — introducing flat rotation curves and unseen halos. 01:26 – What Dark Matter Isn’t Visible matter vs. dark matter — and why normal atoms can’t explain cosmic stability. 01:51 – The Hunt for the Unseen Inside underground detectors searching for rare collisions—waiting decades for a single signal. 02:30 – The Annual Heartbeat How Earth’s orbit creates a seasonal dark-matter signal claimed by the DAMA/LIBRA experiment. 03:46 – The 30-Year Controversy UCSD’s investigation into why the DAMA/LIBRA signal remains unconfirmed after three decades. 04:48 – Dark Matter & Nuclear Peace How dark-matter research inspired technologies for nuclear monitoring and treaty verification. 06:01 – From Deuterium to Discovery The UCSD legacy of Harold Urey and the Big Bang’s elemental evidence. 06:18 – The Stakes Why DAMA/LIBRA could be either the discovery of the century or physics’ longest false alarm. 07:14 – Experimental Reality Check Prof Ni explains why newer xenon experiments contradict DAMA’s results. 08:20 – Annual Modulation Explained How Earth’s motion through the galactic halo causes detectable variations in event rates. 10:05 – CSI: Particle Physics How dual-phase xenon detectors fingerprint atomic-scale collisions with nanosecond precision. CORRECTION: The animation shown is from the LUX-ZEPLIN (LZ) experiment not XENON experiment. LZ is currently one of the world’s most sensitive direct-detection experiments for dark matter, located deep underground at the Sanford Underground Research Facility (SURF). 13:36 – The Mosquito and the Freight Train Brian Keating’s analogy on the extreme precision needed to detect dark matter. 14:24 – Why Reproducibility Matters Why other labs struggle to replicate DAMA’s 20-sigma claim due to crystal purity and secrecy. 17:11 – The Unexpected Discovery Instead of dark matter, UCSD’s detectors captured solar neutrinos streaming through Earth. 18:56 – Filtering the Noise Using AI and machine learning to find 11 neutrino events among petabytes of data. 21:20 – Catching a Decay Older Than Time The world’s first observation of xenon double-electron capture — a half-life longer than the universe. 23:41 – The Vanishing Signal Why Ni’s team disproved their own “solar axion” hint — an example of science correcting itself. 25:40 – Magnetic Neutrinos and Future Colliders How exotic particle theories might reshape dark-matter physics. 29:20 – Students of the Invisible Meet the UCSD and Columbia students building the next generation of dark-matter detectors. 34:12 – The Cleanest Room on Earth Inside the radon-free chamber where future detectors are assembled. 35:18 – Swords Into Plowshares How DARPA adapted dark-matter detectors to monitor nuclear reactors remotely. 38:10 – What We’ve Learned Why 85% of the universe remains missing—and why that mystery keeps science alive. 🎥 Directed & Narrated by: Brian Keating 🔬 Featuring: Prof. Kaixuan Ni, Prof. Liang Yang, Zihao Shi (Columbia) 📍 Location: UC San Diego 🎙️ From The Professor Keating Experiments series Join this channel to get access to perks like monthly Office Hours: https://www.youtube.com/channel/UCmXH_moPhfkqCk6S3b9RWuw/join My tell-all cosmic memoir Losing the Nobel Prize: http://amzn.to/2sa5UpA 📍 Filmed at UC San Diego’s Mayer Hall and Harold Urey Hall — home to experiments that may finally prove what 85% of the cosmos is made of. 🏄‍♂️ Twitter: https://twitter.com/DrBrianKeating 📝 Join my mailing list; just click here http://briankeating.com/list ✍️ https://briankeating.com/blog 🎙️ Audio-only https://briankeating.com/podcast