Discoveries of Scientists of the "Age of Reason" The discoveries of many scientist and great thinkers of the "Age of Reason" have all contributed to the entire scope of how we view astronomy today. The shift was of a less secular thesis to one based on humanism and the Scientific Method. There were several great thinkers that led to this discovery on the scientific level, which chiefly began and ended with the astronomers/scientists Copernicus and Isaac Newton. Copernicus was a mathematician as well as a scientist whom found the stars fascinating. He did, however, find a great flaw