There was an episode of PBS Space Time on the holographic principle in general recently, and I believe they’ve also discussed the black hole thing as well.
If it’s a block hole, it doesn’t really matter. A black hole is not more dangerous than a planet with the same mass, it has the same gravity. The only difference is that it’s much tinier. If planet 9 is a black hole, it’s so small that Sun has stronger gravity (and bigger mass), meaning it’s bound to rotate around the Sun the same way every other large body in the Solar system is.
Planet 9 maybe is or isn’t a primordial black hole and it won’t hurt you.
IIRC, isn’t it closer to a white hole, what with expansion? If you were far enough away, you cannot reach ‘there’ vs being guaranteed to reach ‘there’ like a black hole. Though really, it’s neither. Just curved spacetime.
The fact we think of white holes and black holes as separate entities just goes to show our great lack of understanding of spacetime.
Or that the observable universe could be inside of a black hole. Don’t watch too many black hole videos before bed.
Planet 9 is not a primordial black hole and it can’t hurt you. 🙀
I thought I heard once that our universe could be a holographic projection on a 2D plane surrounding around a black hole.
Don’t ask me for any details further than that, because I do not remember.
There was an episode of PBS Space Time on the holographic principle in general recently, and I believe they’ve also discussed the black hole thing as well.
Projected by what?
I don’t remember.
If it’s a block hole, it doesn’t really matter. A black hole is not more dangerous than a planet with the same mass, it has the same gravity. The only difference is that it’s much tinier. If planet 9 is a black hole, it’s so small that Sun has stronger gravity (and bigger mass), meaning it’s bound to rotate around the Sun the same way every other large body in the Solar system is.
Planet 9 maybe is or isn’t a primordial black hole and it won’t hurt you.
IIRC, isn’t it closer to a white hole, what with expansion? If you were far enough away, you cannot reach ‘there’ vs being guaranteed to reach ‘there’ like a black hole. Though really, it’s neither. Just curved spacetime.
The fact we think of white holes and black holes as separate entities just goes to show our great lack of understanding of spacetime.
My understanding is its similar in difference to a protostar and a nova