I’ll admit, I’m not deep in astronomy but thats inherently misguided. In a 3d space, observing at a fixed point, all areas that extend past how far we can observe would not be the shape of the universe but just our range of vision.
I’ll admit, I’m not deep in astronomy but thats inherently misguided. In a 3d space, observing at a fixed point, all areas that extend past how far we can observe would not be the shape of the universe but just our range of vision.
Tinidril@midwest.social 4 days ago
Thus the term “observable universe”. Everything beyond our observable universe is being expanded away from us at faster than the speed of light, so nothing outside will ever reach us. Causality is completely and irrevocably severed at those distances so, arguably, anything outside the observable universe is not part of “our” universe.
Clinicallydepressedpoochie@lemmy.world 4 days ago
My point is, it doesn’t reveal anything about the nature of the universe only about the limited view we can observe.
Tinidril@midwest.social 4 days ago
As I just explained, it’s not really about observation, it’s about causation. If two objects can never possibly interact, then are they really in the same universe?
Looking out in space is also looking back in time. Anything (roughly) that is further than we can observe in the microwave background would be further back in time than the beginning of time, and therefore doesn’t exist at all in our universe. It a bit brain bending.
NotLemming@lemm.ee 4 days ago
So when you say never, do you mean not in the ‘lifetime’ of our sun, or?
Clinicallydepressedpoochie@lemmy.world 4 days ago
I would say yes they are part of the same universe because if you changed your position it would reveal things you didn’t see before and mask thing you use to see. Not that that is possible yet, but there are no laws of physics preventing it, only our super short live spans.