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Old Apr 7th 2019, 01:24 PM   #11
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We only know that dark matter exists due to the curvature of space time it creates.
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Old Apr 8th 2019, 02:11 AM   #12
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Originally Posted by CaptainMarvel199 View Post
We only know that dark matter exists due to the curvature of space time it creates.
That's incorrect. We know that dark matter exists because of measured rotation profiles of stars in galaxies; their shape suggests that there is more matter in the galaxy than suggested by photometry.

EDIT: That is correct... my bad!

This kind of stuff is in textbooks, but here is a nice paper on dark matter basics: https://arxiv.org/abs/1006.2483
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Last edited by benit13; Apr 8th 2019 at 05:57 AM. Reason: I swear... I can't type sometimes. Corrected everything :p
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Old Apr 8th 2019, 03:48 AM   #13
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In support of Captain Marvel

Surely the Rotation Profiles are due to the Space-Time curvature.

There is additional evidence of dark matter that is derived from gravitational lensing.
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Old Apr 8th 2019, 05:28 AM   #14
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Originally Posted by Woody View Post
Surely the Rotation Profiles are due to the Space-Time curvature.

There is additional evidence of dark matter that is derived from gravitational lensing.
Actually, yeah. Thanks for the correction.

I think I need a coffee, because I misread the sentence to mean something else :s
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