EntityQ3363554· pop 8· linked from 21 articlesdeceleration parameterSign in to savedimensionless measure of the cosmic acceleration of the expansion of spaceConnectionsHubble–Lemaître lawEntityexpansion of the universeEntityPlanckEntityaccelerating expansion of the universeEntityAlbert EinsteinPersonIsaac NewtonPersonGalileo GalileiEntityuniverseEntityNicolaus CopernicusEntityStephen HawkingPersonJohannes KeplerEntityBig BangEntityInternational Standard Book NumberEntityphotonEntityChristiaan HuygensEntitydigital object identifierEntityEdwin HubbleEntitydark matterEntityRoger PenroseEntityredshiftEntityCategoriesPhysical cosmology