JWST mature galaxies suggest an older universe. Studies show expansion imperfectly models redshift. Surface brightness and angular diameter distance do not support expansion. The crisis is resolved by replacing GR, while a new cause for redshift is found. We adopt gravity theory of Kris Krogh where gravity changes quantum vacuum rather than geometry. Redshift occurs at emission from earlier time dependent potential. A hot matter creation initiated gravity propagation changing light speed, particle mass, and physical constants. Cooling to CMB temperature achieved by mass change with momentum conservation. Estimated time for galaxy formation is 450 billion atomic years or 49 billion current years since CMB. Using cosmological principle with gravity dependency of terms in governing equation, we solve for time dependent potential since matter creation. We predict wavelength of past spectral lines, which when measured reveal emission time. Using determined variable light speed, we integrate to calculate distance from emission. We predict Hubble curve depending only on matter density without expansion or ad hoc parameters. Krogh gravity as updated remains consistent with successful GR tests and predicts testable new dynamics not predicted by GR. These include observed acceleration anomalies for Earth flybys, JUNO Jupiter orbiter, Pioneer Probe, apparent superluminal galactic jet acceleration, galaxy rotation, and more rapid growth of black holes through faster accretion. New dynamics explains MOND illusion and ring galaxy formation. JWST mature galaxies confirm older universe, while galactic jets confirm predicted higher light speed. Greater baryon mass density supports prolific star formation. Many stars are likely dead or consumed by black holes, so invisible baryon mass is expected to be greater than visible mass.