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It would not look isotropic in any other moving
frame of refernce, would it?

2007-05-10 06:54:46 · 2 answers · asked by Alexander 6 in Science & Mathematics Physics

The question is not about universe being isotropic, it's about whether
_expansion of universe being isotropic.

2007-05-10 07:05:25 · update #1

2 answers

The universe is only isotropic and homogeneous on very large scales (much larger than galaxies). Thus at large distances, regardless of your frame of reference, the universe would still look isotropic. You should keep in mind that we are not in any special reference frame ourselves so if the universe looks isotropic to us then it must look isotropic to any other observer as well (they would say that we were in some fast moving reference frame).

2007-05-10 07:01:13 · answer #1 · answered by mistofolese 3 · 0 1

No. It does look isotropic. Think of the lower-dimensional analogy of a bug on a beach ball. The beach ball expands without the bug noticing any special direction on the ball's surface.

2007-05-10 14:44:33 · answer #2 · answered by Anonymous · 0 1

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