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sci.Hubble-law-recession Calculator
Calculates recession velocity and distance for a galaxy using the simple Hubble law v = H₀ × d and estimates cosmological redshift z. H₀ ≈ 70 km/s/Mpc — the Hubble tension between CMB-derived (67.4) and local distance-ladder (73) values is an active area of cosmological research.
Inputs
Z Redshift
Reference formula or conversion factor shown for context.
H0 Km S Mpc
Reference formula or conversion factor shown for context.
Results
recession velocity (km/s)
Sample size or count used in the calculation.
distance (Mpc)
The computed distance or separation.
distance (million light-years)
The computed distance or separation.
lookback time (billion years, approx)
The computed duration or time value.
v = H₀ × d (Hubble law)
Reference formula or conversion factor shown for context.
1 Mpc = 3.086×10²² m = 3.26 Mly
Reference formula or conversion factor shown for context.