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  Copernicus is born in Torun, Poland
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  Copernicus published his detailed astronomical manuscrpit he had been working on for 16 years.
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  Died on May 24, 1543
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  Galileo is born.
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  Galileo is working on creating a telescope.
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  Based on his observations of the sun spots on the sun that are caused by intense magnet.
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  Galileo dies.
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  Newton is born.
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  Newton dies.
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  Edwin Hubble was born.
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  Hubble demonstrates that there are galaxies beyond the Milky Way.
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  Hubble and Humason identify Hubble's Law, proving that the universe is expanding.
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  Hubble dies because of a heart attack.