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We do not know if the universe has an end it might be flat or it might be in the shape of a donut.
Observable universe - Wikipedia
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We do not know if the universe has an end it might be flat or it might be in the shape of a donut.
It would be turned upside down because they would possess all the gravity in/of the universe at once.
This notion fails, as the universe already possesses all of the gravity in the universe at once, yet it continues to expand.
In order for that momentum to be reversed, there would have to be a greater opposing force. You have not identified this greater opposing force, nor have you accounted for unrecoverable heat.
...But the gravity is spread out too thickly at this point in time. The sum of the pressure on black holes increases as it becomes both larger and alone. The mathematical factor doesn't count for this reaction that takes place when dust no longer exists.
The gravity of the matter in the universe is spread out; and the vast majority of it, continues to spread farther out. There are a relatively few pockets, we call black holes, where matter is being accumulated; but the vast majority of all matter and energy is moving away from these black holes.
Try looking at it this simplified analogy. If you build a campfire and puts some rocks around it, those rocks will capture and store some of the heat; but most of the heat of that fire will rise up into space. When the fire goes out, the heat that went into space wont come back to the rocks.
The observable universe is not the whole universe.
But isn't it true that our sun, and our entire galaxy will one day be consumed by our black hole?
Most of the radiant energy from our sun, leaves our solar system, never to return. This happens as the sun loses mass. When the sun loses mass, its' gravity is diminished. Now, if a photon's momentum can escape the sun's gravity at the sun's peak gravity; why would the momentum of that photon reverse and move toward the sun's state of diminished gravity?
No you don't see what I'm getting at. The universe is estimated at about 14 billion years old, the universe is expanding (possibly at the speed of light). There is a limit to how fast light can travel so most of the universe light isn't able to reach us so we can't see it. We need to use mathematical equations and inferences to guess the shape of the universe.I think I see what you're getting at; for example, just because I haven't actually seen a rainbow unicorn, doesn't mean that they don't actually exist.
I'll just stick with the empirical evidence for now.
Let's keep it real.
It wouldn't because of it's momentum. But large objects, like earth, will gradually become consumed by the black hole. We can't forget that planets, solar systems and galaxies all did form, even as spacetime constantly expands... So we know it happens.
No you don't see what I'm getting at. The universe is estimated at about 14 billion years old, the universe is expanding (possibly at the speed of light). There is a limit to how fast light can travel so most of the universe light isn't able to reach us so we can't see it. We need to use mathematical equations and inferences to guess the shape of the universe.
The shape of the observable universe is a ball because light speed is a constant, so what we can see reaches us from all directions, but that's got nothing to do with it's shape.
It's a bit like a ship in the ocean, we can see the ocean but that does not mean that the ocean is circular because we cannot see the shore.
I didn't say that, I said that you can't see it (just like how you can't see the shore when you are somewhere in the ocean).Radiant energy propagates in all directions. This is observable. Why would you suppose that this basic principle of physics wouldn't apply to what has not been observed?
I didn't say that, I said that you can't see it (just like how you can't see the shore when you are somewhere in the ocean).
You've lost me mate and I don't think I want to be found right now
OK I'll try one more time but I don't know why.Electromagnetic radiation propagates equally in all directions from its' origin. In other words, it creates a sphere, in absence of any impedance.
OK I'll try one more time but I don't know why.
When you are in an ocean the ocean looks the shape of a circle, but we know from a map that it has a different shape. The reason for this is because we cannot see the whole of the ocean.
So it is when we look at the universe, the observable universe is a fraction of the whole universe.
Yes I believe the laws are universal.I'll try one more time.
Do you believe that the laws of physics behave differently in different parts of the universe; or do you believe that the laws of physics are universal?
Yes I believe that the laws are universal. It's because of this that I know that the shape of the observable universe is different to the shape of the whole universe.
I can't see what's going on in China; but I trust that the light coming off of their light bulbs moves in all directions, just like mine.
Yes I believe the laws are universal.
It's because of this that I know that the shape of the observable universe is different to the shape of the whole universe.