英語翻譯
In 1506 Copernicus returned to his homeland.A few years later he began to work for the Church.All those years Copernicus carried on his work in astronomy.He had just the most basic equipment and,like other scientists of his day,made observations with only his eyes.Still,using mathematics and logic(邏輯),Copernicus worked out a different theory,which held that the planets went around the sun.
　　Copernicus did not announce his ideas.He did not want to make trouble.But he could not hid the scientific truth.So he talked about his theory with his friends,who strongly advised him to have his work published.His great book,On the Revolutions of the Heavenly Bodies,appeared at the very end of his life.Copernicus saw the first copy on the day he died,May 24,1543.