* Astronomy

Antoine-Laurent de Lavoisier (also Antoine Lavoisier after the French Revolution); (26 August 1743 - 8 May 1794);, the "father of modern chemistry", was a French nobleman prominent in the histories of chemistry and biology.
Read more 

Ed ~ On this day in 1794, French chemist Antoine Lavoisier was tried, convicted, and guillotined all on the same day in Paris.