EntityQ124340· pop 19· linked from 15 articlestired lightSign in to saveclass of hypothetical redshift mechanismsConnectionsexpansion of the universeEntityWilkinson Microwave Anisotropy ProbeEntityRalph Asher AlpherEntityRichard Chace TolmanEntitynon-standard cosmologyEntityAlbert EinsteinPersonIsaac NewtonPersonGalileo GalileiEntityuniverseEntitylightEntityenergyEntityNicolaus CopernicusEntityStephen HawkingPersongalaxyEntityJohannes KeplerEntityBig BangEntityInternational Standard Book NumberEntityspecial relativityEntityelectromagnetic radiationEntityphotonEntityCategoriesFringe physicsLightObsolete theories in physicsPhysical cosmological concepts