Who was copernicus? a. a roman doctor b. a polish astronomer c. a greek philosopher d. a german monk

Nicolaus Copernicus was a Polish astronomer who put forth the theory that the Sun is at rest near the center of the Universe, and that the Earth, spinning on its axis once daily, revolves annually around the Sun. This is called the heliocentric, or Sun-centered, system.

Answer B.
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Copernicus was a polish astronomer. Your answer is B.

It shows that the experiment is designed properly.

That depends. cause the owl finished it in one lick