Caption: A graphs of cosmological distance measures, from cosmological redshift z=0 to cosmological redshift z=0.5 and, with logarithmic scaling, to cosmological redshift z=10,000.

The cosmological model of the graphs is the Λ-CDM model with parameters Hubble constant H=72 (km/s)/Mpc, density parameter for the cosmological constant Ω_Λ = 0.732, density parameter for matter Ω_matter = 0.266, density parameter for radiation Ω_radiation = 0.266/3454 = 0.000077012, and density parameter for curvature Ω_k chosen so that the total density parameter Ω=1.

The Λ-CDM model gives an excellent fit to the current cosmological observations. The curves presented are NOT likely to change much in the future, unless there is some vast paradigm shift in physical cosmology.

The detailed explanation of the curves is too long for a figure caption and is given in IAL 30: Cosmological Distance Measures Explained.

Here we only need to remark that "LOS comoving" stands for cosmological physical distance (or just cosmological physical distance for short) and the unlabeled tick marks in the logarithmic graph stand for factors of 2, 5, and 8.

Credit/Permission: User:Wesino, 2006 / Public domain.

Images linked to Wikipedia.