3 ms·

I believe for black holes the volumetric size is a known function of mass. If you exclude the rest of any Lyman-alpha blob present around the black hole.

• croes 4y ago
  But it's compared to the sun which has a different size to mass ratio. So it's a huge difference between 30B times size of the sun and 30B times mass of the sun.
  • runnerup 4y ago
    Ah, thank you.
• deleted 4y ago
  [deleted]