And now dark matter is throwing a wrench in Einstein’s stuff. Like Newton’s laws, Einstein’s stuff gets is mostly right (impressively so, even!) but breaks inside black holes and doesn’t seem to exactly line up with what we observe about what keeps galaxies in tact.

And I’m sure whatever we discover that “solves” for dark matter will eventually start showing cracks as well, prompting another deep inquiry into the nature of our universe.

Good times.