7 ms·

Rotation implies a great many observables and properties of the universe. There would be a cosmic axis, which implies a cosmic center and a cosmic north. Both

by lumost 2y ago

Rotation implies a great many observables and properties of the universe. There would be a cosmic axis, which implies a cosmic center and a cosmic north. Both concepts that are problematic in an infinite universe. If the universe is in fact inside of a black hole of a different universe - some of these problems go away as the Hubble volume would be the finite boundary of the universe.

exe34 2y ago
and we would be at the center?
- theoreticalmal 2y ago
  My dog is quite sure she’s at the center, if we’re trying to be specific
  - shermantanktop 2y ago
    Main Character Energy? My cat has that too.
- layer8 2y ago
  The center of a black hole lies in the future. It’s called a singularity, and the equations of general relativity break down at it. So no, we are not at the center.
- gitaarik 2y ago
  Yeah, we are. https://en.m.wikipedia.org/wiki/Axis_of_evil_(cosmology) https://en.m.wikipedia.org/wiki/Axis_of_evil_(cosmology)
AnimalMuppet 2y ago
Are we in an infinite universe? I thought the current thinking was that it was finite but unbounded; that is, that it curved back on itself.
- jl6 2y ago
  That’s one speculative possibility, but we don’t know. It could be infinite, or finite with a boundary just out of sight (beyond the edge of the observable universe), or some other more exotic geometry. There’s no solid evidence either way. My money’s on non-infinite, just because I’m not sure infinity is a well-defined concept outside of mathematics. We’ve certainly never observed any other infinite phenomena.
  - voidUpdate 2y ago
    It's only been a finite time since the universe was very small, so unless it's expanding infinitely fast, I don't see how it could be infinite
    - immibis 2y ago
      Was the universe infinitely small or was it just extremely or infinitely dense? Anyway, we don't actually know that, since we do not have a time machine. The theory that the universe used to be much smaller is something we infer based on the snapshot we see today, just like we infer rotation based on the snapshot we see today. Either one could yet be proven wrong.
    - atkailash 2y ago
      [dead]
    - ben_w 2y ago
      It's (mathematically) allowed for it to have always been infinite, and still grow. If you take the number like and apply f(x) = 2x, it was infinite before and after.
      - voidUpdate 2y ago
        yes but if x is finite, any f(x) will still be finite. So the universe has either always been finite, or always been infinite, and given that it started out being very small in a big bang, it would imply the former
Galatians4_16 2y ago
>If the universe is in fact inside of a black hole of a different universe The observation could also be due to an area of relatively high density inside an area of relatively no density.
TheRealPomax 2y ago
Except why would there only be one axis?

by lumost 2y ago

exe34 2y ago

and we would be at the center?

theoreticalmal 2y ago
My dog is quite sure she’s at the center, if we’re trying to be specific
- shermantanktop 2y ago
  Main Character Energy? My cat has that too.
layer8 2y ago
The center of a black hole lies in the future. It’s called a singularity, and the equations of general relativity break down at it. So no, we are not at the center.
gitaarik 2y ago
Yeah, we are. https://en.m.wikipedia.org/wiki/Axis_of_evil_(cosmology) https://en.m.wikipedia.org/wiki/Axis_of_evil_(cosmology)

AnimalMuppet 2y ago

Are we in an infinite universe? I thought the current thinking was that it was finite but unbounded; that is, that it curved back on itself.

jl6 2y ago
That’s one speculative possibility, but we don’t know. It could be infinite, or finite with a boundary just out of sight (beyond the edge of the observable universe), or some other more exotic geometry. There’s no solid evidence either way. My money’s on non-infinite, just because I’m not sure infinity is a well-defined concept outside of mathematics. We’ve certainly never observed any other infinite phenomena.
- voidUpdate 2y ago
  It's only been a finite time since the universe was very small, so unless it's expanding infinitely fast, I don't see how it could be infinite
  - immibis 2y ago
    Was the universe infinitely small or was it just extremely or infinitely dense? Anyway, we don't actually know that, since we do not have a time machine. The theory that the universe used to be much smaller is something we infer based on the snapshot we see today, just like we infer rotation based on the snapshot we see today. Either one could yet be proven wrong.
  - atkailash 2y ago
    [dead]
  - ben_w 2y ago
    It's (mathematically) allowed for it to have always been infinite, and still grow. If you take the number like and apply f(x) = 2x, it was infinite before and after.
    - voidUpdate 2y ago
      yes but if x is finite, any f(x) will still be finite. So the universe has either always been finite, or always been infinite, and given that it started out being very small in a big bang, it would imply the former

Galatians4_16 2y ago

>If the universe is in fact inside of a black hole of a different universe The observation could also be due to an area of relatively high density inside an area of relatively no density.

TheRealPomax 2y ago

Except why would there only be one axis?