Well probably because we’re at the center of the observable universe.
Comment on Black Holes
NaibofTabr@infosec.pub 4 days agoThere’s not a singularity at the center of our observable universe, though.
Well, er, how would you know?
Perhaps the space inside the event horizon is so large, and the distance to the singularity so great, that the expansion we observe from our reference point appears uniform.
VoterFrog@lemmy.world 4 days ago
TheLeadenSea@sh.itjust.works 4 days ago
I know there is no singularity at the center of our observable universe as we are at the center of our observable universe and the Earth has not been destroyed by a singularity.
bstix@feddit.dk 4 days ago
That’s sounds exactly like what someone trapped inside a singularity would say.
TheLeadenSea@sh.itjust.works 4 days ago
I think someone trapped inside a singularity would be too dense to say anything :)
pressanykeynow@lemmy.world 4 days ago
To be fair you require time to become too dense and time doesn’t make sense in singularity. Perhaps you are on your way to become too dense.
NaibofTabr@infosec.pub 3 days ago
Hmm, but what if the Earth has not been destroyed by a singularity yet?
We are at the center of what we can observe, obviously, but assuming that everything (including what we can not observe) is within the event horizon of a singularity then what we can observe may all be experiencing the same (relative) spacetime curvature and is apparently “expanding” because it is accelerating as it falls deeper into the singularity.
I’m kind of thinking of the classic spacetime expansion demo of dots on the surface of a balloon, extended into 3(+?) dimensions… the singularity (the balloon) is expanding as we (and everything else) are drawn further into it, resulting in the objects we can see (the observable universe) appearing to accelerate away from us. The actual center of the singularity is so far away that we can’t observe it, and the acceleration appears (locally) uniform to us in the same way that the surface of an infinite-radius sphere would appear flat.
There’s probably some obvious physics reason this doesn’t work in reality, but I don’t know what it is.
TheLeadenSea@sh.itjust.works 3 days ago
That is certainly an interesting hypothetical hypothesis, if you can think of any way to falsify it (I can’t), I’m all ears!