'In the 1920s <a href="http://www.j-archive.com/media/2008-05-21_DJ_17.jpg" target="_blank">this</a> American astronomer provided the earliest evidence that the universe was expanding'
(Edwin) Hubble
PHYSICISTS: In the 1920s this American astronomer provided the earliest evidence that the universe was expanding
In the 1920s this American astronomer provided the earliest evidence that the universe was expanding
In the 1920s this American astronomer provided the earliest evidence that the universe was expanding
PHYSICISTS
Edwin Hubble
PHYSICISTS