Question

What does Hubble's constant measure?

Answer 1

Hubble's constant corresponds with distance. Hubble's constant can be measured by velocity (km/s divided by distance (Mpc). It is part of an equation that measures the velocity of celestial bodies rushing away from earth.

Explanation:

The velocity is measured by:
`v=H_0d`

When:
v = velocity in kilometers per second ( `kms^-1`)

`H_0` = a value of around `70 kms^-1 Mpc^-1`

d = distance in mega parsec (Mpc)

For example if a typical galaxy is at a distance of 100Mpc, it would be rushing away at 7000 `kms^-1`