Dark Matter May Interact With Regular Matter Beyond Gravity, Study Finds

<img width="600" height="243" src="https://www.sciencealert.com/images/2019-10/processed/DarkMatterAndVisibleMatterInTheUniverse_600.jpg" alt="Bright and dark blotches in space"/>This is very unexpected.

https://www.sciencealert.com/dark-matter-may-interact-with-regular-matter-beyond-gravity-study-finds