3 ms·
I recall reading somewhere the density at the event horizon of the super massive black hole at the center of our galaxy is about the same as water. The singul
by snarfy 8y ago
I recall reading somewhere the density at the event horizon of the super massive black hole at the center of our galaxy is about the same as water. The singularity is supposedly infinite, but the event horizon depends on the size of the black hole.
- PopePompus 8y agoThis isn't quite right. If you take the mass of Sgr A* (the black hole in the center of the galaxy) and divide it by the volume of a sphere (let's ignore rotation for simplicity) with the radius of the event horizon, you do get a density value near that of water. But almost all of the mass is concentrated in or near the singularity. If you ignore the small amount of stuff falling into Sgr A* at any given moment, the density at the event horizon is 0.