For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study.


De revolutionibus orbium coelestium (1543)

Nicolaus Copernicus Quotes

For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study.

For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study.

For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study.

For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study.