Nicolaus Copernicus

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Nicolaus Copernicus was a Icons-flag-pl.png Polish scientist. He is most notable for being the one who corrected Claudius Ptolemaeus's model of the Solar System. He also published a book, De revolutionibus orbium coelestium. He is the probably among the most famous Polish scientists.

Solar System concept

Copernicus believed that the Sun was at the center of the Solar System, with the following planets orbiting it:

Mercury, Venus, Earth (orbited by the Moon), Mars, Jupiter, Saturn.

Sirius and the Stars did not orbit the Sun.