Nicolas Copernicus (1473-1543)
Copernicus is said to be the founder of modern astronomy. He was born in Poland. Later he studied mathematics and optics at Cracow University and at Bologna he studied, canon law.Returning from his studies in Italy, Copernicus, through the influence of his uncle, was appointed as a canon in the cathedral of Frauenburg where he spent a sheltered and academic life for the rest of his days. Because of his clerical position, Copernicus moved in the highest circles of power; but he always retained the curiosity of a student. For relaxation Copernicus painted and translated Greek poetry into Latin. His interest in astronomy gradually grew and he spent time alone conducting his experiments. He made his celestial observations from a turret situated on the protective wall around the cathedral. He observed the skies with his eyes only as a hundred more years were to pass before the invention of the telescope.
In 1530, Copernicus completed and gave to the world his great work De Revolutionibus, which asserted that the earth rotated on its axis once daily and traveled around the sun once yearly: a fantastic concept for the times. Up to the time of Copernicus the thinkers of the western world believed in the Ptolemiac theory that the universe was a closed space bounded by a spherical envelope beyond which there was nothing.
Copernicus was in no hurry to publish his theory, though parts of his work were circulated among a few of the astronomers that were giving the matter some thought; indeed, Copernicus work might not have ever reached the printing press if it had not been for a young man who sought out the master in 1539. George Rheticus was a 25 year old German mathematics professor who was attracted to the 66 year old cleric, having read one of his papers. Intending to spend a few weeks with Copernicus, Rheticus ended up staying as a house guest for two years, so fascinated was he with Copernicus and his theories. Now, up to this time, Copernicus was reluctant to publish, but rather because he was a perfectionist and he never thought, even after working on it for thirty years, that his complete work was ready, -- there were, as far as Copernicus was concerned, observations to be checked and rechecked.
(Interestingly, Copernicus` original manuscript, lost to the world for 300 years, was located in Prague in the middle of the 19th century; it shows Copernicus` pen was, it would appear, continually in motion with revision after revision; all in Latin as was the vogue for scholarly writings in those days.)
Copernicus died in 1543 and was never to know what a stir his work had caused. It went against the philosophical and religious beliefs that had been held during the medieval times. Man, it was believed (and still believed by some) was made by God in His image, man was the next thing to God, and, as such, superior, especially in his best part, his soul, to all creatures, indeed this part was not even part of the natural world (a philosophy which has proved disastrous to the earths environment as any casual observer of the 20th century might confirm by simply looking about). Copernicus` theories might well lead men to think that they are simply part of nature and not superior to it and that ran counter to the theories of the politically powerful churchmen of the time.
Two other Italian scientists of the time, Galileo and Bruno, embraced the Copernican theory unreservedly and as a result suffered much personal injury at the hands of the powerful church inquisitors.
The most important aspect of Copernicus` work is that it forever changed the place of man in the cosmos.