1. Copernican System (kŏ- per -nă-kăn) The youngest stratigraphic system of the Moon

2. 21 Like Galileo, he was committed to the Copernican system as a cosmology and not merely as a mathematical hypothesis.

3. 19 An initial reluctance on the part of Galileo to publicize the Copernican system should not automatically be ascribed to fear of clerical censure.

4. Works of Galileo Galilei, Part 4: Astronomical Works, that is, all that Appertains to the Copernican System, and to the Project on Longitudes, Volume 1, Astronomy Description

5. Copernican system, in astronomy, model of the solar system centered on the Sun, with Earth and other planets moving around it, formulated by Nicolaus Copernicus, and published in 1543

6. He was delighted that the Copernican system...... was widely accepted in everyday life in Holland...... and acknowledged by astronomers, except those, he wrote...... who " were a bit slow- witted or under the superstitions...... imposed by merely human authority.