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Carl Wilhelm Wirtz
Wirtz was able to observe a systematic redshift of nebulae. He then figured out that there are nebulae present outside of our "Milky Way". -
Vesto Slipher
Slipher was condsidered the first to observe the shifts in spectral lines of galaxies. He then became the discoverer of galactic redshifts. An interesting fact about Slipher is that he supervised the work of discovery Pluto (later in 1930) -
Albert Einstein
His theory was influential in the development of the theory of the Big Bang. The mathematics that Einstein produced was used by Hubble in his discoveries involving galaxies. -
Alexander Friedmann
His work was important in the development of the Big Bang Theory. He found solutions to the field equations produced for the preliminary work of the theory. -
Georges Lemaître
He was able to create a model of the universe in order to observe the shifts in the spiral nebulae. This demostration forsees the work which created "Hubble's Law". His theories were also derived from the work of Einstein and De Sitter. -
Edwin Hubble
Hubble's Law, created by Edwin Hubble, states that galaxies continue to move away at a constant speed equal to its distance. His observations concluded that the universe could have been once a compacted matter. -
Milton L. Humason
He was responsible for the formation of "Hubble's Law", as he created this with Edwin Hubble himself. The theory gives the foundation of the Big Bang Theory -
George Gamow
Gamow came up with an opposing argument to Hubble's law, which he called "Lemaitre's Big Bang". He also proposed that the elements of hydrogen and helium found in the universe are evident because of the reactions occurred during the Big Bang.
