Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: Lamont Cranston on 25/06/2021 12:53:00
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So the big bang, everything started moving away from the origin. I'm assuming everything moved outward in all directions.
Are we under the origin, above the origin, out to one side 90* to the origin?.
Are we close to the origin, near the outer edge, or 1/2 way between?
Additional, if we are off center, shouldn't we look out and see 5 billion years one direction and 19 billion years the other direction? (looking towards the origin, 5B years then another 14B years for a total of 19B years,
Bonus; it seems all galaxies have flatten out, why didn't the universe?
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So the big bang, everything started moving away from the origin. I'm assuming everything moved outward in all directions.
That is an incorrect conclusion. There is no origin or center. Space is expanding, so there are no points moving away from a center, at large scales every point in space is moving away from every other point in space.
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So the big bang, everything started moving away from the origin. I'm assuming everything moved outward in all directions.
A model that suggests this produces predictions that contradict what we see. This is not what happened.
The big bang happened not at one place (the origin), but rather everywhere, which is why you can still see the original 'fireball' if you look in any direction. The bang happened everywhere, so it happened here as much as anywhere. You can't see the light that originated here since that light has since traveled far away (about 48 BLY).
Bonus; it seems all galaxies have flatten out, why didn't the universe?
Because the universe isn't rotating, or rather the shape of it isn't a function of its rotation.
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Bonus; it seems all galaxies have flatten out, why didn't the universe?
No, they haven't. 10% to 15% of galaxies are elliptical. And the old idea that elliptical galaxies evolve into spiral galaxies has been rejected.
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In the middle naturally !!
There's a small catch to it though. So are everyone, and everything, else.