Because it was the old catholic churches teachings.
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they believed that the earth was the center.
that the earth was the center of the universe and that the earth wAS FLAT
that the earth is the center of the universe.
Copernicus' calculations were considered extreme because saying that the earth is not the center of the universe is saying that ______ is also not the center the universe.
He was a Polish mathematician who disagreed with Ptolemy's view that the earth is the center of the universe. The heliocentric theory is the theory that the sun is the center of the universe, not the earth.