Millions of Them Lurk in Our Neighborhood, and They Give Off No Light

Every model of how stars live and die says the Milky Way should hold about a hundred million black holes, and in sixty years we have confirmed fewer than a hundred. Almost every one we know of was found because it is eating a companion star and glowing in X-rays. The quiet ones give off nothing at all, and the models say they are the vast majority. This investigation asks where they are, and how close the nearest one to us might be. It also asks how you find something that emits no light. Three were found by the wobble of the star beside them. One turned up entirely by accident. From a 1964 rocket over New Mexico to Hubble, Chandra and the European Space Agency's Gaia spacecraft, this is the story of learning to hear silence. On December 2, 2026, the catalog that may hide the rest is scheduled to open. Chapters 0:00 A Hundred Million, Fewer Than a Hundred 1:53 Following the X-Rays Back 6:49 Why Only the Loud Ones Show 12:26 A Star Trembling Around Nothing 20:42 The One That Bent the Light 23:41 When the Wobble Is a Mistake 26:42 Drawing the Map 31:48 How Close Is the Nearest One 34:43 December 2, 2026 37:39 The Sky You Already Know Sources Olejak, Belczynski, Bulik & Sobolewska, Astronomy & Astrophysics 638, A94, 2020: https://arxiv.org/abs/1908.08775 Elbert, Bullock & Kaplinghat, Monthly Notices of the RAS, 2018: https://arxiv.org/abs/1703.02551 Corral-Santana et al., BlackCAT, Astronomy & Astrophysics 587, A61, 2016: https://arxiv.org/abs/1510.08869 Fifty Years After the Discovery of the First Stellar-Mass Black Hole (Cygnus X-1), 2024: https://arxiv.org/abs/2411.12507 El-Badry et al., Gaia BH1, Monthly Notices of the RAS, 2023: https://arxiv.org/abs/2209.06833 El-Badry et al., Gaia BH2, Monthly Notices of the RAS, 2023: https://arxiv.org/abs/2302.07880 Gaia Collaboration, Panuzzo et al., Gaia BH3, Astronomy & Astrophysics Letters, 2024: https://arxiv.org/abs/2404.10486 ESO, eso2408 press release, 2024: https://www.eso.org/public/news/eso2408/ Sahu et al., OGLE-2011-BLG-0462, The Astrophysical Journal 983, 104, 2025: https://arxiv.org/abs/2503.07820 El-Badry & Quataert, LB-1, Monthly Notices of the RAS, 2020: https://doi.org/10.1093/mnras/staa1324 El-Badry et al., The Unicorn and the Giraffe, Monthly Notices of the RAS, 2022: https://arxiv.org/abs/2203.06348 Hailey et al., Nature, 2018 (NASA Chandra release): https://chandra.harvard.edu/photo/201... Torniamenti et al., Hyades, Monthly Notices of the RAS, 2023: https://arxiv.org/abs/2303.10188 Nosirov et al., The Astrophysical Journal 1004, 21, 2026: https://arxiv.org/abs/2601.14499 Müller-Horn, Rix, El-Badry et al., Astronomy & Astrophysics 709, A62, 2026: https://arxiv.org/abs/2510.05982 Olejak et al., Max Planck Institute for Astrophysics release, 2026: https://www.mpa-garching.mpg.de/11519... Burdge et al., V404 Cygni triple, Nature, 2024 (MIT release): https://news.mit.edu/2024/physicists-... ESA, Gaia data release schedule, 2026: https://www.cosmos.esa.int/web/gaia/r... Credits 3D worlds rendered with the channel's own engine. Source imagery: A. Berdeu/ESO ESO/Nogueras-Lara et al. ESO/P. Horálek ESO/S. Brunier Edenhofer, G., Zucker, C., Frank, P., Saydjari, A. K., Speagle, J. S., Finkbeiner, D., & Enßlin, T. A. 2023, Zenodo, doi:10.5281/zenodo.8187943 (A&A, 685, A82, 2024) Gravitational Wave Open Science Center (gwosc.org), a service of the LIGO Scientific Collaboration, the Virgo Collaboration, and KAGRA; data behind the figures of Abbott et al. 2016, PRL 116, 061102 International Gemini Observatory/NOIRLab/NSF/AURA NASA, ESA, and T. Brown (STScI), W. Clarkson (University of Michigan-Dearborn), and A. Calamida and K. Sahu (STScI) NASA/CXC/SAO NASA/CXC/SAO; Image Processing: NASA/CXC/SAO/N. Wolk NASA/JPL-Caltech/ESO/R. Hurt O'Neill, T., Zucker, C., Goodman, A. A., & Edenhofer, G. 2024, Harvard Dataverse, doi:10.7910/DVN/INB1RB (ApJ, 973, 136) SpaceEngine © Cosmographic Software LLC Vanessa Harvey, REU program/NOIRLab/NSF/AURA Zucker, C. 2021, Harvard Dataverse, doi:10.7910/DVN/ZU97QD, 1VT8BC, E8PQOD, 1UPMDX (data for Zucker, C., Goodman, A. A., Alves, J., et al. 2022, Nature, 601, 334)