A Relation between Distance and Radial Velocity among Extra-Galactic Nebulae. Offprint from: Proceedings of the National Academy of Sciences, Vol. 15, No. 3, March 1929.
Washington: National Academy of Sciences, 1929. Extremely rare offprint issue of Hubble’s landmark paper which “made as great a change in man’s conception of the universe as the Copernican revolution 400 years before” (DSB). This paper “is generally regarded as marking the discovery of the expansion of the universe” (Biographical..... More
Item #5177