SIZE COMPARISON 3D UPDATED (2026) The Biggest Black Holes Ever Found

The biggest black holes ever found, in a 3D size comparison updated for 2026: from a 21 km black hole the size of Mars's moon Phobos to Phoenix A, whose event horizon could be 590 billion km wide. 40 objects on one black mirror floor, with real light bending. 🪐 The facts: • The smallest here, from the gravitational wave GW230529, weighs 3.6 Suns. Its event horizon is only 21.3 km wide. • Sagittarius A*, at the center of our galaxy, holds 4.3 million Suns. Its event horizon is 25.4 million km wide: 18 times the width of the Sun. • M87*, the first black hole ever photographed (April 2019), is 38.4 billion km wide, more than four times the width of Neptune's orbit. • TON 618 is estimated at about 40.7 billion Suns. Its event horizon, about 240 billion km wide, could hold our whole solar system out to Neptune's orbit about 27 times side by side. Light would need more than 9 days to cross it. 💡 Fun fact: the width of an event horizon grows in a straight line with mass. Every extra Sun adds about 5.9 km. The biggest black hole ever weighed directly sits in the Cosmic Horseshoe: 36 billion Suns, measured in 2025. Every black hole in this video is rendered with real light bending, calculated pixel by pixel from Einstein's equations, which is why the glowing disk seems to wrap over and under the hole. The black shadow of each model is drawn exactly as wide as its real event horizon, so the sizes compare honestly; seen up close, gravity would make that shadow look about 2.6 times wider. The colors of the disks are chosen to tell the black holes apart, they are not their real colors. Phoenix A is an estimate from models, not a measurement, and is marked as one. ⏱️ Chapters: 00:00 Stellar Black Holes 01:40 Black Hole Mergers 02:50 Intermediate-Mass Black Holes 04:14 Supermassive Black Holes 07:16 Ultramassive Black Holes 08:12 TON 618 and Phoenix A 08:41 From 21 km to 590 Billion km 📡 Sources: LIGO-Virgo-KAGRA (GW150914, GW190521, GW230529, GW231123), ESA Gaia (Gaia BH1, BH2, BH3), GRAVITY Collaboration 2022 (Sagittarius A*), Event Horizon Telescope 2019 (M87*), ESA/Hubble and Haberle et al. 2024 (Omega Centauri), Liepold, Ma & Walsh 2025 (Holmberg 15A), Ge et al. 2019 (TON 618), Brockamp et al. 2016 (Phoenix A, estimate), NASA planetary fact sheets. Some masses are still debated by astronomers. 🎵 Music: "Etherial Choir Ascends" by Doug Maxwell, from the YouTube Audio Library. All numbers checked against the published measurements. Which black hole surprised you the most? 👇 Subscribe to DeepField for the universe, to scale. 🚀 #space #blackhole #sizecomparison