In the early 1980s, it was realized that this could be resolved if cold dark matter dominated over the baryons, and the theory of cosmic inflation motivated models with critical density.
Začiatkom 80-tych rokov sa zistilo, že tento problém je možné vyriešiť pomocou chladnej tmavej hmoty, ktorá by prevažovala nad baryónovou hmotou a inflácia inšpirovala modely s kritickou hustotou.