Hubble's Law Lab

Graph distance of galaxy (x-axis, 0 to 350 Mpc) vs. velocity of galaxy (y-axis, -500 to 25,000 km/s)

The slope of the best-fit line will be Hubble's Constant, H0, which represents the rate of expansion of the universe.

Calculate Slope Using Two Galaxies

Calculate Hubble's Constant with this slope calculator. Type in data for two galaxies and click "Calculate."

XY
Galaxy 1
Galaxy 2