Best video you’ll ever see on the topic imo (and very short)

https://youtu.be/tmNXKqeUtJM?si=1KrwzaG-b3hW-GkW

The huge caveat here is assuming gravity is quantised in the same way as the other forces, gravitons don’t need to exist for gravity to exist. This is just the beauty argument of string theory with a new name, it’s cool and I love this type of stuff because it’s amazingly satisfying, but that’s not enough to make it reality.

Don’t get me wrong, this is still useful work but I kinda hate the way quanta reports on a lot of physics…

No idea if I can reply to a deleted comment but I read the root comment totally wrong and just restated everything they said. My bad.

deleted by creator

If that was the case, we would already have a quantum theory of gravity. The fact that “gravitons” (here I mean the particles of a second quantisation of GR) can interact with themselves makes the theory almost completely useless.

It’s technically possible to write down such a theory, but the only way to get results out of it is to first perform an infinite number of experiments.

Almost none of this applies in the case of something like loop quantum gravity, which I understand very little of but I don’t believe it’s possible to discuss it using the language of QFT like I have above.

I briefly worked in this area of physics, it’s complicated and depends on your definition of a particle and which quantum gravity model you’re talking about.

To simplify things you can just ask the same thing about non-quantum gravity. Why does gravity escape the black hole? The painfully mundane answer is that the black hole is gravity, it’s not escaping itself. Gravitational waves can’t be emitted from inside the black hole but that’s because those are a form of radiation and not the structure of spacetime.

This is specifically important because even quantum gravity (the kind with gravitons) still has this distinction. Particles belong to a field and are excitations of it, the gravitational field itself is not made of those particles. The force associated with that field is mediated by gravitons, but what that really means is complicated and honestly possibly just the result of a cool mathematical trick. It also comes with a bunch of crazy behaviour where you have particles that can break the laws of physics by just kinda doing it so quickly that nature blinks and misses it.

The point is, the quantum gravitational field is enough for the black hole to do its job when objects come by, gravitons don’t actually need to escape, though they are involved in complicated ways.

If you’re looking for books, then it depends on what field you want to study. Generally just I’d search for recommended textbooks for that field and then I’d definitely buy it and wouldn’t just download it from libgen.is

Now I’m wondering, surely someone has already made a language that’s designed to read like scripture?

🙏

Holy shit this is some of the absolute worst data visualisation I’ve ever seen, thankyou for this

There’s basically no way to answer these questions using real physics I’m afraid.

It definitely can’t close it’s mouth faster than the speed of light. Yes it would have a strong gravitational pull, almost definitely so strong that it would just collapse into a black hole and not be able to exist. If it weren’t that dense, then it would basically just be a big diffuse gas cloud that couldn’t do much anyway, it would basically have to be a proto galaxy to not collapse into one.

If it’s using magic to exist, then anything is on the table.

That’s not entirely accurate, the force it applies to close it’s mouth would probably travel at or close to the speed of sound along its jaw, but it could reach the speed of light by applying that force if you ignore a number of problems. One of which is that it will turn into a black hole at that scale, it’s much too dense.

On your second point, it’s hard to make any of those into galaxy killers. Supermassive black holes exist at the centre of virtually every galaxy and don’t do a ton, and even quasars only have limited killing range as there are limits to how collimated a beam of radiation can be. White holes are more complicated and I don’t have enough space in a single comment to go into the nuances, but they’re about as harmless as black holes really.

The only thing I can think of that would destroy all life in a galaxy would also destroy the universe, and that’s to trigger a false vacuum decay, but that might not be possible anyway.

Yeah, fair enough. Best of luck, you deserve happiness and I’m rooting for you

I’m so sorry that you had such a horrible journey, but I’m so proud of you for making it this far

No clue how true it was, but there’s a bit of a joke in physics that Einstein was really bad at the maths of general relativity. His incredible insight was that gravity is geometric, rather than the actual mathematical framework.

HELL YEAH!!! I’m so goddamn happy for you!!!

egg_irl was a big part of it for me too, it’s an awesome place

That’s sort of my experience, but I’ll also add that if you don’t know that being trans is a thing then it’s possible to just not recognise what it is or that you can do something about it.

The real sign of being trans is if you go to egg_irl and start relating to almost everything lol /s kinda (sorry I haven’t got a clue how to link communities)

Tbh there’s no magic bullet to be sure, but if you fantasize about being a different gender that’s a pretty big one, cis people don’t do that.

I’ll add an edit: The only thing that confirmed it to me, was how excited I felt after I took hormones for the first time. Beginning them was terrifying, “what if I damage my body and I actually didn’t want this?” kinda stuff, but then I realised I wouldn’t have been waiting 6 months and been to all these appointments if I wasn’t, took the damn pill and felt amazing. It’s been ~9 months now and it’s made me insanely happy, that’s the only concrete proof I can offer to myself that I am in fact trans.

Pretty sure my inability to use a chair correctly is what makes me bi, thinking everyone is hot is just a side effect