Edwin Powell Hubble is renowned for determining ... from each other at a rate constant to the distance between them (Hubble's Law). The further away they were, the faster they receded.

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

Edwin Hubble was the first astronomer to take the ... distances and redshifts is today termed Hubble–Lemaître's law. Because the universe appeared to be uniformly expanding, Lemaître further ...

The Hubble constant is one of the most important numbers in cosmology because it tells us how fast the universe is expanding, which can be used to determine the age of the universe and its history. It ...

The two keys to Edwin Hubble's breakthrough discovery were forged by others in the 1910s. The first key, the period-luminosity scale discovered by Henrietta Leavitt, allowed astronomers to calculate ...

Edwin Hubble went on to measure the distances to ... distances and redshifts is today termed Hubble–Lemaître's law. Because the universe appeared to be uniformly expanding, Lemaître further ...

Edwin Hubble was young and ambitious ... you can calculate its distance from how bright it appears using the inverse square law. The more distant the star is, the fainter it appears.