What is Hubble's Law and why is it important?

1 Answer
Oct 2, 2016

I'm sorry your question remained unanswered for so long. Hubble's law says that galaxies move away from each other at a speed proportional to their distance. It is the basis for confirming that the universe is expanding.


#v = H D# where v is the velocity, d is the distance and H is Hubble's constant, #H = 160 \frac{\frac{km}{s}}{10^6 ly}#