And we have here a great example of why I’m a life scientist, and not a physicist. Physics is just plain weird, once you get outside of the human scale (”classical physics”) that we are all familiar with.
It’s probably naive to think this, but if one is thinking about ways to test the hypothesis that the universe is inside a black hole, could one start with the observation that we look out at night and see a black universe? All those stars out there generate a LOT of light—light doesn’t just disappear. But if the universe is inside a black hole, which by definition absorbs light, doesn’t that explain where the light goes?
Any physicists out there are welcome to critique my idea (and tell me where I went horribly astray).
>All those stars out there generate a LOT of light—light doesn’t just disappear.
It doesn’t disappear, but it does have to fill a truly immense volume, so that’s why space is dark. It’s the cubic increase of volume thing. The space between galaxies is far far larger than the galaxies themselves.