EntityQ3373825· pop 16· linked from 123 articlesrecombinationSign in to saveepoch at which charged electrons and protons first became bound to form electrically neutral hydrogen atoms, around 378 thousand years after the Big BangConnectionsredshiftEntitycosmic microwave backgroundEntityHubble–Lemaître lawEntityYakov ZeldovichEntityPlanckEntityAlbert EinsteinPersonIsaac NewtonPersonGalileo GalileiEntityatomEntityhydrogenEntityuniverseEntityNicolaus CopernicusEntityheliumEntityStephen HawkingPersonJohannes KeplerEntityBig BangEntityelectronEntityInternational Standard Book NumberEntityprotonEntitykelvinEntityCategoriesPhysical cosmology