Conversation

Notices

1. Embed this notice
   Jerome (j@shitposter.world)'s status on Wednesday, 26-Feb-2025 21:08:10 JST Jerome
   No More Singularities? Quantum Gravity Could Finally Solve the Black Hole Mystery
   
   Scientists have discovered a way to create black holes without the mysterious singularities where physics breaks down. By using pure gravity rather than exotic matter, their new model challenges previous theories and brings us closer to understanding the true nature of spacetime. This breakthroug
   
   https://scitechdaily.com/no-more-singularities-quantum-gravity-could-finally-solve-the-black-hole-mystery/
   • Embed this notice
     翠星石 (suiseiseki@freesoftwareextremist.com)'s status on Wednesday, 26-Feb-2025 21:08:06 JST 翠星石

     in reply to

     • Alyx Hinata ???
     @alyx @j >the axiom that information cannot be destroyed
     Is that the axiom that entropy can only increase, or a different one?
     
     >the information it carried cannot be retried
     Don't you get more entropy out eventually via hawking radiation?
   • Embed this notice
     Alyx Hinata ??? (alyx@gameliberty.club)'s status on Wednesday, 26-Feb-2025 21:08:07 JST Alyx Hinata ???

     in reply to

     @j The black hole information paradox is the issue stemmed from the axiom that information cannot be destroyed, but once matter hits a black hole's singularity, the information it carried cannot be retried, and thus it is considered destroyed. IIRC it conflicts with one of the laws of thermodynamics.

   • Embed this notice
     Jerome (j@shitposter.world)'s status on Wednesday, 26-Feb-2025 21:08:08 JST Jerome

     in reply to

     • Alyx Hinata ???
     @alyx What is the information paradox and how do you solve it?
   • Embed this notice
     Jerome (j@shitposter.world)'s status on Wednesday, 26-Feb-2025 21:08:09 JST Jerome

     in reply to

     • Alyx Hinata ???
     @alyx
     >this is the first time I've heard anything about black holes requiring anything that could be described as "exotic matter".
     
     What exactly did you think the singularity was made out of?
   • Embed this notice
     Alyx Hinata ??? (alyx@gameliberty.club)'s status on Wednesday, 26-Feb-2025 21:08:09 JST Alyx Hinata ???

     in reply to

     @j It's made of normal matter, compressed to an infinitely small size. That doesn't make it "exotic matter". lol.

     Exotic matter refers to things like tachyons and other hypothetical particles that we have no proof to their existence, not even mathematical hints of them existing, that people speculate on because maybe they could make wormholes or time travel work.

     Black holes are literally made from collapsing stars. There's nothing special about the matter they're made from. It's the same elements, the same protons, neutrons and electrons you find in a star. Why are we debating this like it's some big unknown?

   • Embed this notice
     Alyx Hinata ??? (alyx@gameliberty.club)'s status on Wednesday, 26-Feb-2025 21:08:10 JST Alyx Hinata ???

     in reply to

     @j Somehow this smells a bit like BS, because this is the first time I've heard anything about black holes requiring anything that could be described as "exotic matter".

     Also, the entire singularity problem has kinda been debunked before. You see, if you do the math with Einstein's equations, and assume a static (non-rotating) black hole, you get a singularity as a result of the equations. But to date, all observed black holes have been found to be spinning.
     Doing the math on a spinning black hole is much, much harder, but apparently you don't get a singularity anymore from Einstein's equations. You still get an event horizon, a point beyond which the gravity is so large that no light can escape, but underneath that the matter is shaped into a highly dense donut shape. No physics breaking, infinitely small, singularity required.

     Of course, Einstein's theory is considered incomplete, and people are looking and hoping for a quantum gravity theory to know for sure what happens in these extreme conditions.