Births
1605 - Ismael Bullialdus, French astronomer
1852 - Henri Moissan, French chemist and Nobel Prize laureate
1939 - Stuart Kauffman, American biologist
Deaths
1694 - Gabriel Mouton, French scientist
1895 - Louis Pasteur, French scientist
1953 - Edwin Hubble, American astronomer
1979 - John Herbert Chapman, Canadian physicist
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February 20th
1762 - Death of Tobias Mayer, German astronomer