On Monday, November 19, 2018 at 2:08:35 PM UTC-8, Double-A wrote:
On Sunday, November 18, 2018 at 4:34:32 PM UTC-8, Herbert Glazier wrote:
On Saturday, November 17, 2018 at 10:35:16 PM UTC-8, The Starmaker wrote:
How many Black Holes are there?

One for every flat galaxy and two for every round galaxy.I two million LYs the Milky Way will be round. Bert


Maybe some galaxies have two that have not merged yet.

There is no 'maybe' about it. Here you go...

https://en.wikipedia.org/wiki/Superm..._the_Milky_Way

"Some galaxies, such as the galaxy 4C +37.11, appear to have two supermassive black holes at their centers, forming a binary system. If they collided, the event would create strong gravitational waves.[53] Binary supermassive black holes are believed to be a common consequence of galactic mergers."