“We know that the difference between a heliocentric theory and a geocentric theory is one of relative motion only, and that such a difference has no physical significance. [Astronomy and Cosmology - A Modern Course. San Francisco: W.H. Freeman &… — Fred Hoyle Copy Share Image
![“We know that the difference between a heliocentric theory and a geocentric theory is one of relative motion only, and that such a difference has no physical significance. [Astronomy and Cosmology - A Modern Course. San Francisco: W.H. Freeman & Co]” quote by Fred Hoyle](https://sms4smile.com/quotes/img-quotes/a24/fred-hoyle-11367_san-francisco_we-know-that-the-difference-between-a-he_2444331.jpg)