EntityQ4235042· pop 14· linked from 20 articlesinitial singularitySign in to savetime period of seeming infinite density just after the Big BangConnectionsAlbert EinsteinPersonBlack holeConceptStephen HawkingPersonBig BangEntityquantum mechanicsEntitytemperatureEntityInternational Standard Book NumberEntityinfinityEntitygeneral relativityEntitymass densityEntitydigital object identifierEntityInternational Standard Serial NumberEntityLev LandauEntityRoger PenroseEntitystring theoryEntityLibrary of Congress Control NumberEntityOCLC, Inc.EntityQ180686EntitycosmogonyEntityphysical constantEntityCategoriesBig BangGravitational singularitiesPhysical cosmology