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Dark matter != dark energy - dark energy is what is proposed to be the cause of the expansion of the universe, dark matter is what binds galaxies together.

For others, the article mentioned is likely: https://phys.org/news/2019-11-evidence-anisotropy-cosmic.htm...

Ah, yes, sorry. I didn't realize this article talks about dark matter, not dark energy.

It's in the first three words of the headline though

Also worth noting is that it isn't necessarily that expansion anisotropic. It's the acceleration of expansion that is anisotropic.

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