Vesto Slipher

He then attended Indiana University in Bloomington, IN and earned his Bachelor's Degree in Mechanics and Astronomy in June 1901.

[7] While at school at Indiana University, Slipher formed a personal bond with one of his professors, William Cogshall.

[9] Slipher spent his years there studying many things, but most notably, spectroscopy and redshifts of spiral nebulae.

[10] He was one of the first astronomers to show that Uranus has a much faster rotation than Earth, similar to the other giant planets in our solar system.

[10] His discoveries were confirmed ten years later when Edwin Hubble used the Mount Wilson Observatory reflector to view the galaxies much more clearly.

[11] He found that the planets showed different absorption lines that were not present in sunlight, and identified those bands with ammonia and methane.

[13] Using the Doppler effect and noting subtle changes, he measured the speeds in which spiral nebulae traveled during his research from 1912 and onward.

[1] By 1917, Slipher had measured the radial velocities of 25 "spiral nebulae," and found that all but three of those galaxies were moving away from us, at substantial speeds.