3 ms·

There is a LOT of evidence for the existence of dark matter. https://en.m.wikipedia.org/wiki/Dark_matter#Observational_evidence https://en.m.wikipedia.org/wiki

• nynx 6y ago
  What you've linked to is evidence that our understanding of gravity is wrong OR there is dark matter.
  • magicalhippo 6y ago
    And that's why there's groups working on both dark matter and modified/new theories of gravity. It seems quite difficult to modify GR or make a new theory of gravity which explains the new observations while matching GR in the old ones, where GR has been verified. But if someone manages, then you'll see scientists flock to it.
  • kmm 6y ago
    But the hypothesis of dark matter fits all of the evidence, while no alternative theory of gravity comes close. That's what makes dark matter so attractive to physicists. I'm not shunning the idea, I've worked on alternative explanations myself (with no concrete result), but for the moment we remain convinced that dark matter is the better theory.
    • ashildr 6y ago
      > That's what makes dark matter so attractive to physicists. I _really_ like what you did here :-)
• dnautics 6y ago
  MOND does not reject the observational evidence for Dark Matter theory, it just postulates that it primary cause is not a "non-baryonic particle that interacts only via the gravitational field".