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1491
Copernicus gets Educated
Enrolled at the Kraków astronomical-mathematical school and began to build the foundation for his further mathematical achievements. -
Mar 9, 1497
Verified Observations of celestial bodies
"He verified its observations about certain peculiarities in Ptolemy's theory of the Moon's motion, by conducting on 9 March 1497 at Bologna a memorable observation of the occultation of Aldebaran, the brightest star in the Taurus constellation, by the moon" “Nicolaus Copernicus.” Wikipedia, Wikimedia Foundation, 13 July 2018, en.wikipedia.org/wiki/Nicolaus_Copernicus. -
Period: 1503 to 1514
Working on heliocentric model
While acting as his uncle's secretary and physician, Copernicus, on top of those duties, developed his outline for his heliocentric theory. The outline was published under the title "Nicolai Copernici de hypothesibus motuum coelestium a se constitutis commentariolus." This outline, without mathematical "proofs" laid the basework for his heliocentric theory -
1543
On the Revolutions
Copernicus wrote this text (comprised of six books) that established his idea for a heliocentric universe. This controversial (at the time) idea helped spring forth the Scientific Revolution. The heliocentric theory disputed Ptolemy's theory that the earth was central.
https://youtu.be/zHUWP9zu4W8 Rabin, Sheila, "Nicolaus Copernicus", The Stanford Encyclopedia of Philosophy (Fall 2015 Edition), Edward N. Zalta (ed.), URL = https://plato.stanford.edu/archives/fall2015/entries/copernicus/
