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Please note that I am not trying to forward any type of personal theory. I am only trying to understand generally accepted physics.
I have heard the universe described as the surface of a balloon. Inflating the balloon is the expansion of the universe and everything move away from everything. No edges nice and neat.
I would suppose that if you extend the balloon to a fourth dimension then you would have space as the surface of a hypersphere. If this is not the correct way to look at it then please explain what is.
The questions bellow are only pertinent if a 4d hypersphere is the correct way to view the universe.
Given enough resources and ignoring the expansion of the universe. Is it possible to circumnavigate the universe (go in one direction for long enough and end up where you started?) What would be the path equation for such a trip look like?
If the universe is a 4d hypersphere then I assume that by definition it is curved? How would someone at the surface be able to measure the curvature from a fixed point?
I have heard the universe described as the surface of a balloon. Inflating the balloon is the expansion of the universe and everything move away from everything. No edges nice and neat.
I would suppose that if you extend the balloon to a fourth dimension then you would have space as the surface of a hypersphere. If this is not the correct way to look at it then please explain what is.
The questions bellow are only pertinent if a 4d hypersphere is the correct way to view the universe.
Given enough resources and ignoring the expansion of the universe. Is it possible to circumnavigate the universe (go in one direction for long enough and end up where you started?) What would be the path equation for such a trip look like?
If the universe is a 4d hypersphere then I assume that by definition it is curved? How would someone at the surface be able to measure the curvature from a fixed point?