In the 1920s this American astronomer provided the earliest evidence that the universe was expanding
This is called the Hubble Law (after the American astronomer Edwin 
Hubble, who discovered the cosmic expansion in the late 1920s from the 100-
inch Hooker... [DOC] [TLE] Edwin Hubble - Wikipedia [PAR] Edwin Powell Hubble (November 20, 1889  September 28, 1953) was an 
American ... American astronomer Vesto Slipher had provided the first evidence 
for this .... in fact, entire galaxies outside our own, suspected by researchers at 
least as early as ...