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OrbitLab
The universe's expansion, quantified.
Hubble's Law states recession velocity is simply distance multiplied by the Hubble constant (H₀ ≈ 70 km/s per megaparsec) — the farther away a galaxy is, the faster it appears to be receding from us.
This isn't galaxies flying through static space away from a central point — it's space itself expanding uniformly everywhere, meaning every observer, anywhere in the universe, would measure the same law relative to themselves.
Molar mass of any chemical formula (e.g. H2O, C6H12O6, Ca(OH)2).
OpenPercent composition of an element within a chemical formula.
OpenSimplest whole-number ratio formula from elemental masses or percentages.
OpenPercent yield from actual and theoretical reaction yields.
OpenRecession velocity
7,000 km/s
Uses H₀ = 70 km/s/Mpc
What you entered
v = H₀ × d
70 × 100= 7000 km/sResult
Recession velocity: 7,000 km/s
At 100 Mpc away, the universe's expansion carries this object away at 7,000 km/s.