3 ms·

Here’s another wacky thing about black holes. It must be possible for one black hole to contain another. Imagine for example a tremendous supermassive black w

Here’s another wacky thing about black holes. It must be possible for one black hole to contain another. Imagine for example a tremendous supermassive black with a small stellar mass one falling into it. If the small one is free falling into the big one, then a few moments after crossing the event horizon it must still be in an inertial reference frame. So, one black hole can contain another. Perhaps, black holes contain a fractal where each black hole actually has many other smaller ones inside, and those have smaller ones in turn.

quchen 3y ago
> it [the small black hole] must still be in an inertial reference frame. Why? As soon as one’s center crosses the other’s Schwarzschild radius, the two merge and become a single hairless [1] black hole, no? Where does the »a few moments« come into play, and why would anything about the original black holes be retained? [1] https://en.wikipedia.org/wiki/No-hair_theorem https://en.wikipedia.org/wiki/No-hair_theorem