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cmdtarken t1_j7cst9q wrote

Reply to comment by NotAHamsterAtAll in People knowing that the Earth isn't the center of the universe yet not believing in aliens... by turquoisepaws

Not at all. We are the center of our observable universe and that's all. We are not the center of our universe

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NotAHamsterAtAll t1_j7ctllf wrote

You have no way of knowing that there even exist a non-observable universe, and in the BB theory, we are indeed in the center of the universe (observable or not).

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cmdtarken t1_j7cuq7g wrote

So you think that we sit at the absolute epicenter of the universe even though we don't sit at the center if our own galaxy?

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Anonymous-USA t1_j7di0bo wrote

Enough buddy. There is no center — or the center is everywhere — same as there’s no center on the surface of a ball. Don’t pretend you don’t get it.

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cmdtarken t1_j7ehut9 wrote

Except a ball would have a center as a ball is a 3d space. The center would be at the core of the ball. Same with our space. Assuming the big bang is true and the universe was created out of a singularity expanding outward, then the center would be the origin of the big bang itself. We are a point in space somewhere within the expanding matter of this universe. We are not at the center or the edge of this universe

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Anonymous-USA t1_j7ek9ic wrote

That core would be in a dimension that doesn’t exist in our universe. I was giving you a simple analogy in 2D space. I’m sure you fully understand this concept and are just being argumentative. A child can understand it.

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cmdtarken t1_j7em4de wrote

Except you are using a 2d example to represent 3d space. This is a common problem with trying to portray infinity in a way thats understandable to everyone. We, as matter, exist with a physical 3 dimension. The existence of matter allows us to determine a center as long as we can observe that matter in it's entirety. Thus is true whether or not we live within an infinite or finite space.

If space is finite, that center is defined by its edges.

If it's infinite, and assuming that the only matter within that universe came from finite number of big bangs, then its center would be defined by the distribution of matter within it.

If it's infinite, and assuming an infinite number of big bangs, then a center cannot be determined as there exists no definable edge or boundary of matter.

Going back to your ball example and why it is a bad representation of your argument, you could define a central point. First problem, the surface of a ball is finite. Ignoring that let's look at problem two. If you add any matter to the surface of that sphere, you now have a definable point in space. As it is a single point, it would become the definable center of that surface. As you add more points, the center would be defined by a point in space that would see an even distribution of points on the surface.

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phredbull t1_j7dd667 wrote

There is no center of an unbounded space.

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cmdtarken t1_j7eijwr wrote

That depends. Even infinite space can have a defined center if there is a finite material within that space for which we can observe distribution and find the center

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NotAHamsterAtAll t1_j7d0bvj wrote

Yes, according to the BB theory all places are in the center of the universe. Because the universe expanded out from a small dense state, so all places was there together.

If course that is if you believe in the BB theory, which I will not use against you if you don't.

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cmdtarken t1_j7eifq2 wrote

That doesn't make any sense and I believe you may be misunderstanding what was being said. According to big bang theory, matter existed as a singularity that exploded into what we see as our universe. Assuming even distribution of matter, the origin of the big bang would be our center.

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