# Black Hole ## History The first simulated image of a black hole was made in 1978 by Jean-Pierre Luminet. ![[first_sim_black_hole.png]] ## Mass Classes There are several different classes of black hole that are categorized by their mass. | Class | ~ Mass | ~ Radius | | ---------------------------- | ---------------- | -------------------- | | Ultramassive black hole | 109–1011 M☉ | >1,000 AU | | Supermassive black hole | 106–109 M☉ | 0.001–400 AU | | Intermediate-mass black hole | 102–105 M☉ | 103 km ≈ R$_{Earth}$ | | Stellar black hole | 2–150 M☉ | 30 km | | Micro black hole | up to M$_{Moon}$ | up to 0.1 mm | #astrophysics #space