Model of the universe/s, multiverse's etc (just a thought nothing more )

[great_sushi]

has anyone thought that our universe orbits with other universe's around a central core. our universe might not be infinite but because of the sheer size, we would never be able to comprehend the distances between the universe's. so we say that it is infinity as we can't put a magitude on the size yet. or maybe the other universes are in different dimensions so we would'nt be able to see them? In our galaxy there are solar systems etc orbiting together around a central black hole... could it be a similar concept but on a huge scale with universes. I have also heard that universes could overlap.
just a thought... wen i was in bed last night

 

[bcrowell]

Hi, great_sushi,

Welcome to PF!

We have a couple of entries in the https://www.physicsforums.com/forumdisplay.php?f=206" that I think address some the questions you raise:

Can we tell whether the universe is rotating?
Is the universe finite, or is it infinite?

I think the first one explains how we can rule out orbital motion. The second one shows that the infinite/finite question is not something that we just have to speculate philosophically about. The description you've given also doesn't seem to allow for the observed fact that the universe is expanding.

If you want to get started learning about cosmology, a book I always recommend is Relativity Simply Explained by Martin Gardner. It's a little out of date, but it's well written and fun to read.

Please note that the PF rules prohibit overly speculative posts.

-Ben

 

[great_sushi]

I thought that all celestial objects would be gravitationaly bound, but i was wrong. I thought that if gravity was everywhere in the universe surely if would need some angular velocity to stop itself from collapsing in on its self. ( i know that's one theory of the end of the universe).

A sort of thinking where everything would orbit around something. Like our planets orbit around our sun... our solar system orbits around the black hole in the centre of the milkyway. And i thought that a galaxy would have a huge gravitational field which could reach another mass over time, maybe it could orbit around something extremely far away which is extremely dense and massive... And other galaxies alike.

I thought that we had observed some evidence for a rotation, some indication of anisotropy in the electromagnetic propagation over large distances. But i could be wrong, that might explain something else. Am i completely wrong in thinking that a rotation could explain the doppler red shifts...
I am a newbie don't shout if I'm being a tit. i'll check that book out cheers

 

[bcrowell]

I thought that we had observed some evidence for a rotation, some indication of anisotropy in the electromagnetic propagation over large distances. But i could be wrong, that might explain something else. Am i completely wrong in thinking that a rotation could explain the doppler red shifts...

This is explained in the FAQ entry.

 

[sardar]

There have been many theories and speculations about the structure of the universe, including the possibility of a multiverse. While it is an interesting idea, there is currently no scientific evidence to support the existence of other universes orbiting around a central core. Our current understanding of the universe is based on observations and data gathered through various scientific methods, and these have not provided any evidence for a multiverse.

Additionally, the concept of infinity is a mathematical concept and does not necessarily apply to physical objects like the universe. We may never be able to fully comprehend the vastness of the universe, but that does not mean it is infinite.

The idea of universes existing in different dimensions is also a popular concept, but again, there is no scientific evidence to support it. While it is possible that there are other dimensions beyond our own, it is currently beyond our understanding and cannot be proven or disproven.

As for the idea of universes overlapping, this is not a concept that is supported by scientific evidence. Each universe, if it exists, would have its own unique properties and would not be able to overlap with another.

It is important to remember that scientific theories and ideas must be supported by evidence and observations. While it is interesting to consider different possibilities and theories, it is also important to approach them critically and with a scientific mindset.