Answer:
Copernicus.
Explanation:
Nicolaus Copernicus was a Renaissance-era mathematician, astronomer, and Catholic canon who formulated a model of the universe that placed the Sun rather than Earth at the center of the universe. (Wikipedia)
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Je suis, Tu es, il/elle/on est, Nous sommes, Vous etes, ils/elles ont
Here's the answer.
Bonjour! son A!