Hubble's Law (Recession Velocity) Calculator
Calculate the recession velocity from a galaxy's distance.
Mpc
km/s/Mpc
Result
7.000 km/s
Recession velocity: 7.000 km/s
Result in all units
Step-by-step solution
v = H₀ · d
What Is Hubble's Law?
Hubble's law states that the speed at which distant galaxies recede from us is directly proportional to their distance. It is evidence for the expansion of the universe.
How is it calculated?
How Is It Calculated?
v = H₀ × d
H₀: Hubble constant, d: distance.
- Enter the galaxy's distance.
Frequently Asked Questions
Why do distant galaxies recede faster?
Because the universe is expanding, the more distant the galaxy, the more space expands in between, so the recession velocity increases.