Comment on RE: https:// mastodon.social/@pomarede/1168 09987222569057 In a
For non-cosmologists:
[3] #ComovingDistance: https://en.wikipedia.org/wiki/Comoving_and_proper_distances
[4] #LuminosityDistance: https://en.wikipedia.org/wiki/Luminosity_distance
[5] #little_h https://en.wikipedia.org/wiki/Hubble%27s_law#Dimensionless_Hubble_constant