EntityQ2078326· pop 14· linked from 32 articlesflatness problemSign in to saveproblem in cosmology, solved by cosmic inflationConnectionsFriedmann equationsEntityshape of the universeEntitygravityEntityinflationEntityexpansion of the universeEntityAlbert EinsteinPersonatomEntityStephen HawkingPersonBig BangEntityInternational Standard Book NumberEntitymatterEntityspeed of light in vacuumEntityplasmaEntitywisdomEntitygeneral relativityEntityelectromagnetic radiationEntityphotonEntitycosmologyEntitysphereEntityscientific methodEntityCategoriesCosmic inflationPhysical cosmologyUnsolved problems in physics