"What if Dark Matter Doesn’t Actually Exist?
Modern cosmology assumes dark matter exists. But what makes us so certain that dark matter is the answer—and what if we're wrong?
(. . .)
Accounting for dark matter solves a lot of unexplained cosmological phenomena, and this convenience means that most astronomers readily accept that dark matter exists. Accordingly, many top-notch institutions worldwide dedicate resources toward carefully designed, technologically extraordinary experiments for detecting dark matter.
All that said, we’ve yet to find irrefutable proof of dark matter. Now, it’s worth emphasizing again that, as you’ll see, the indirect and theoretical evidence largely rules in favor of dark matter. But in physics, there’s always the slim possibility that we’re completely off the mark, and nature had other plans for how reality works."
https://gizmodo.com/what-if-dark-matter-doesnt-actually-exist-2000753208
sich fragend wo das Zeug bloß steckt.
https://www.science.org/content/article/newton-s-law-gravity-passes-its-biggest-test-ever