He reasoned that since parallax could not be observed for celestial objects near the sun, then the earth was stationary. This erroneous assumption was because at the time he had no way of knowing that celestial objects were so far away that their parallax angles were too small to detect.
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The Union won the Battle of Antietam, although both sides experienced heavy casualties. With 23,000 casualties, this was the bloodiest single day of the Civil War. General George McClellan was fired not long after the battle, despite the victory.
Explanation:
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If you are looking for a persons name, then the answer is Don Juan de Onate, who became the first Governor-General of New Mexico.