Alternative theories Dark matter

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because dark matter remains conclusively identified, many theories aim explain observational evidence without invoking dark matter have emerged. obvious way modify general relativity. general relativity well-tested on solar-system scales, validity on galactic or cosmological scales less certain. suitable modification general relativity can conceivably eliminate need dark matter. well-known theories of class mond , relativistic generalization teves, f(r) gravity , entropic gravity. alternative theories abound.


a problem alternative theories observational evidence dark matter comes many independent angles (see observational evidence section above). alternative theory not has explain evidence, has explain individual cases such bullet cluster, wherein observations indicate location of center of mass far away center of baryonic mass. nonetheless, there has been scattered successes alternative theories, such 2016 test of gravitational lensing in entropic gravity.


the prevailing opinion among astrophysicists while modifications general relativity can conceivably explain part of observational evidence, there enough data conclude there must still dark matter.








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