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Vesto was the first to find and actually observe data the proved nebulas are moving away from everything (dis proved the static state theory)
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George Lemaitre Discovered an expanding universe by observing red shifts in the spiral nebula
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Edwin provided comprehensive Observational foundation for Lemaitre's Theory.
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Lemaitre Proposed a hypothesis for a universe began with a explosion of primeval atom later called the big bang theory
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Both theory's had evenly divided support. steady state means universe is always at the same point its at now.
Big bang means universe is always at a constant rate of expanding. -
The Hubble Telescope launched and gave astronomers a chance to have untainted/distorted pictures of deep space