LUCK + REASON. “We can point out that MDM is more economical than CDM in fitting data at the galactic scale and it is superior to MOND at the cluster scale.) Logically (and happily as it indeed turns out to be the case), the same critical acceleration appears both in the galactic and cluster data fits based on MDM.” (MDM = Modified Dark Matter; MOND = Milgrom’s theory of modified Newtonian dynamics; ΛCDM or Lambda-CDM model = a version of the Big Bang cosmological model).
https://www.mdpi.com/1099-4300/21/11/1035/htm