The Hubble law relates the velocity (v) of the expansion of the universe to the distance (r) to the source. This simple physical law was established by E.Hubble who in 1929 had discovered that the universe is expanding, and this interpretation of the evidence of redshifts found in starlight has been strengthen ever since. In simple words, the law states that the universe is indeed expanding in a way that further the galaxy receding from us, the greater its receding velocity.
- v = H0r
where H0 is a constant of proportionality called the Hubble constant
According to J.Hartnett the Hubble constant is not truly constant but it has emerged that there is an inherent scale dependence to its value. Thus, its determination depends on method used and on the distances to the sources. The Hubble law written in an invariant way that enables one to derive a four-dimensional transformation similar to the Lorentz transformation is part of M.Carmeli's new theory of Cosmological special relativity.
- ↑ 1.0 1.1 Hartnett, John (2007). Starlight, Time and the New Physics. Creation Ministries International, 57-61. ISBN 978-0-949-906687.
- ↑ 2.0 2.1 Moshe Carmeli (2002). Cosmological Special Relativity, The Large-Scale Structure of Space, Time and Velocity, 2nd Edition. World Scientific Publishing, 2, 117. ISBN 9-789-02-4936-5.