Question

What is the formula for Hubble's Law?

Answer 1

`v = H0 * r`

Explanation:

Hubble's law states that Every object in the observable universe is receding away from us at a speed proportional to it's distance. So, the greater the distance, the faster that object is traveling away from us. This can be given by,

`v = H@ * r`

Where,

`v` is the velocity.

`H@` is the Hubble's constant, 70 km `sec^-1` `megaparsec^-1`

This means that an object at a distance of 1 Megarparsec will have a speed of about 70 km/ sec.

`r` is the distance.