The Antikythera Mechanism: The Ancient Computer From a Shipwreck

In 1900, sponge divers sheltering from a storm off a tiny Greek island found a shipwreck — and inside it, a corroded lump of bronze that turned out to be the most complex machine to survive from the ancient world. Gears, spirals and inscriptions that predicted eclipses, tracked the Moon, and may once have shown the planets: this is the Antikythera mechanism, and two-thirds of it is still missing. How it was found, how X-ray CT finally let us read it, the mathematics cut into its bronze — and the questions nobody has answered: who built it, and where is the rest? Chapters: 0:00 The Object 0:52 The Wreck 1:59 The Evidence Inside 3:19 Mathematics in Bronze 5:12 Forecasting the Sky 6:29 The Missing Front 7:40 The Missing Maker 9:09 Still Unresolved Sources: Freeth, T. et al. (2006), "Decoding the ancient Greek astronomical calculator known as the Antikythera Mechanism", Nature Freeth, T. et al. (2008), "Calendars with Olympiad display and eclipse prediction on the Antikythera Mechanism", Nature Freeth, T. et al. (2021), "A Model of the Cosmos in the ancient Greek Antikythera Mechanism", Scientific Reports Woan, G. & Bayley, J. (2024), on the Calendar Ring of the Antikythera mechanism Budiselic, C. et al. (2020), Antikythera Mechanism Research Project publications Seiradakis, J. & Edmunds, M. (2018), "Our current knowledge of the Antikythera Mechanism" Szigety & Arenas (2025), triangular-teeth study (preprint — discussed as preliminary in the video) Antikythera Mechanism Research Project (AMRP); National Archaeological Museum, Athens (official chronology — the 793-letters-by-1958 count, via epigraphist G. Stamires) Photo & image credits: Logg Tandy, CC BY 4.0, via Wikimedia Commons · Joyofmuseums, CC BY-SA 4.0, via Wikimedia Commons · Zde, CC BY-SA 4.0, via Wikimedia Commons · Peulle, CC BY-SA 4.0, via Wikimedia Commons · Marsyas, CC BY 2.5, via Wikimedia Commons · Gary Todd, CC0, via Wikimedia Commons · Giovanni Dall'Orto, CC BY-SA 2.5, via Wikimedia Commons · MatthewHoobin, CC BY-SA 4.0, via Wikimedia Commons · Antonis Giakoumakis, CC BY-SA 4.0, via Wikimedia Commons · Alexander Sigachev, CC0, via Wikimedia Commons · Ekaterina Borisova, CC BY-SA 4.0, via Wikimedia Commons · Bernard Gagnon, CC BY-SA 4.0, via Wikimedia Commons · Onno Zweers, CC BY-SA 3.0, via Wikimedia Commons · Chris Olszewski, CC BY-SA 4.0, via Wikimedia Commons · Alexey Komarov, CC BY-SA 4.0, via Wikimedia Commons · W.carter, CC BY-SA 4.0, via Wikimedia Commons · Robin Férand, CC BY 3.0 · Osama Sarm, CC BY-SA 4.0, via Wikimedia Commons · dronepicr, CC BY 2.0, via Wikimedia Commons · Joerg, CC BY 2.0, via Wikimedia Commons · John Duncan, CC BY 3.0, via Wikimedia Commons · Jebulon, CC0, via Wikimedia Commons · Moravec, CC BY-SA 4.0, via Wikimedia Commons · Gts-tg, CC BY-SA 4.0, via Wikimedia Commons · marsupium photography, CC BY-SA 2.0, via Wikimedia Commons · Mogi Vicentini, CC BY 2.5, via Wikimedia Commons · Shixart1985, CC BY 2.0, via Wikimedia Commons · Sharon Mollerus, CC BY 2.0, via Wikimedia Commons · Martin Mark, CC BY-SA 4.0, via Wikimedia Commons · Ishkabibble, CC BY-SA 4.0, via Wikimedia Commons · Francesco Bini, CC BY-SA 4.0, via Wikimedia Commons · Christian-wittmann-1964, CC BY-SA 4.0, via Wikimedia Commons · Freeth et al., Scientific Reports (2021), CC BY 4.0 · NASA (public domain) · NOAA (public domain) · Svoronos (1903) plates, NYU Faculty Digital Archive — public domain · Domenico Fetti, "Archimedes" (1620) — public domain · Cuneiform tablet photo: Gavin Collins — public domain · Unknown author (1900–01), CC BY-SA 3.0, via Wikimedia Commons. Book cover shown for editorial reference: Derek de Solla Price, "Gears from the Greeks" (American Philosophical Society, 1974). Reconstructions are labelled "RECONSTRUCTION" on screen wherever they appear. A small number of illustrative images were AI-generated; every one is labelled "ARTIST'S IMPRESSION" on screen, and no AI image depicts the mechanism itself or any evidence. Music: "The Sky of Our Ancestors" by Kevin MacLeod (incompetech.com) — Licensed under Creative Commons: By Attribution 3.0 (http://creativecommons.org/licenses/b...)