What is Hubble's Law?

1 Answer
aniruddho r. · Callum S.
Nov 19, 2015

It states that the universe is expanding.

Explanation:

It has two parts:-

  1. Every galaxy in the observable universe has a relative velocity away from the Earth(as evidenced by their red shifts) .
  2. The farther the galaxy the faster it is moving away from us.

Hubble's Law is given by:
#v=H_0r#
where:
#v=# recessional velocity
#H_0=# Hubble constant
#r=# distance

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