The Most Ancient Spiral Galaxy Has Been Discovered

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AnonymousAnonymous
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24 May 2021, 9:21 pm

BeaArthur
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25 May 2021, 1:44 pm

Why are spiral galaxies that shape?


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Mr Reynholm
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25 May 2021, 2:17 pm

BeaArthur wrote:
Why are spiral galaxies that shape?

Gravitational force



BeaArthur
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25 May 2021, 4:33 pm

well, why a flat disk instead of a big round ball?


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naturalplastic
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25 May 2021, 4:49 pm

BeaArthur wrote:
well, why a flat disk instead of a big round ball?


Good question.

Basically... all galaxies rotate. So you get a centrifugal force. Matter gravitates to the equator - on the plane of the spinning ball, and away from the poles. And the thing starts to flatten out.



goldfish21
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26 May 2021, 3:06 pm

naturalplastic wrote:
BeaArthur wrote:
well, why a flat disk instead of a big round ball?


Good question.

Basically... all galaxies rotate. So you get a centrifugal force. Matter gravitates to the equator - on the plane of the spinning ball, and away from the poles. And the thing starts to flatten out.


Makes sense. I never thought about that before.


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