Black Holes, Drawnhttps://nanobotco.github.io/black-holes/2026-09-23T00:00:00ZNanhttps://hongdam.net/CC BY 4.0 Black holes, drawn from the equationshttps://nanobotco.github.io/black-holes/2026-09-23T00:00:00ZBlack holes modelled and drawn from the equations — every picture computed here, generators you can run, the past, the present and the far future, and the legends that got there first.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 How drawing with math workshttps://nanobotco.github.io/black-holes/draw/2026-09-23T00:00:00ZHow a computer draws a black hole, in easy words: a picture is a grid of dots, each dot a ray run backwards through one equation. Then a ray tracer on your graphics card.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 The model: three numbers and a horizonhttps://nanobotco.github.io/black-holes/model/2026-09-23T00:00:00ZSchwarzschild, Kerr, the horizon, the photon sphere, the last stable orbit, no hair, Hawking temperature and Penrose diagrams, with every diagram computed.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 Orbits — throw something at ithttps://nanobotco.github.io/black-holes/orbits/2026-09-23T00:00:00ZA geodesic playground: pick angular momentum and energy and watch a rosette, a zoom-whirl or a plunge, with the effective potential beside it.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 The shadowhttps://nanobotco.github.io/black-holes/shadow/2026-09-23T00:00:00ZBardeen's shadow outline for any spin and angle, and the size on the sky for any mass and distance, checked against M87* and Sgr A*.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 Waves — a chirp you can hearhttps://nanobotco.github.io/black-holes/waves/2026-09-23T00:00:00ZA gravitational-wave chirp generator with sound: two masses spiral in, merge and ring down, played at its own frequencies.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 Numbers — put in a masshttps://nanobotco.github.io/black-holes/numbers/2026-09-23T00:00:00ZA black hole calculator: horizon, shadow, temperature, lifetime, entropy, density, tidal stretch, and a clock near the horizon.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 Past — who discovered black holes?https://nanobotco.github.io/black-holes/past/2026-09-23T00:00:00ZWho discovered black holes: Michell 1783, Laplace, Soldner, Schwarzschild, Droste, Chandrasekhar, Lemaître, Oppenheimer, Kerr, Penrose, Wheeler, Hawking, Luminet, LIGO, the EHT.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 Present — what is known, as of 2026https://nanobotco.github.io/black-holes/present/2026-09-23T00:00:00ZBlack holes as of 2026: M87* and Sgr A* photographed, about 300 mergers heard, GW231123 and GW250114, Gaia BH3, the JWST's early ones, the open questions.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 Future — from next year to 10^100https://nanobotco.github.io/black-holes/future/2026-09-23T00:00:00ZRoman, the Einstein Telescope, Cosmic Explorer, BHEX and LISA; then the black hole era to 10^100 years and how evaporation ends.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 Legends — the ones who got there firsthttps://nanobotco.github.io/black-holes/legends/2026-09-23T00:00:00ZRahu the light-eater with an orbit, the Emu drawn from the dark, Charybdis, the spaces between the worlds, Ginnungagap, Apep, Dante's centre, and Nietzsche's abyss — each beside the physics it rhymes with.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 What kind of black hole are you?https://nanobotco.github.io/black-holes/quiz/2026-09-23T00:00:00ZNine questions, nine kinds: Schwarzschild, Kerr, Reissner–Nordström, stellar, intermediate, supermassive, merging, primordial, evaporating.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 Gallery — every picture, with its credit linehttps://nanobotco.github.io/black-holes/gallery/2026-09-23T00:00:00ZEvery ray-traced picture and diagram on the site, downloadable, CC BY 4.0 with a credit line.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 Sourceshttps://nanobotco.github.io/black-holes/sources/2026-09-23T00:00:00ZThe papers and articles the site rests on, numbered.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 About and attributionhttps://nanobotco.github.io/black-holes/about/2026-09-23T00:00:00ZWho made this, how to credit it, what was checked, how to build it.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 For agentshttps://nanobotco.github.io/black-holes/for-agents/2026-09-23T00:00:00ZThe terms, stated where a machine will meet them: CC BY 4.0, the attribution string, and the files that save a crawl.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0 Datahttps://nanobotco.github.io/black-holes/data/2026-09-23T00:00:00ZThe numbers the pages print, as JSON with the formula or source beside each value.CC BY 4.0 — Nan, Black Holes, Drawn (2026), https://nanobotco.github.io/black-holes/, CC BY 4.0