Hubble diagram of SNe Ia, GRBs, and quasars. The picture includes 1048 SNe Ia of the Pantheon sample, 31 LGRBs, and 1598 quasars. The black solid line is a flat ΛCDM model with Ω_m = 0.3 and Hubble constant H₀ = 70 km s⁻¹ Mpc⁻¹. Distance moduli and corresponding errors are provided by Risaliti & Lusso (2019) which were calculated by the calibrated UV and X-ray correlation using the low-redshift SNe Ia.