Georg Joachim Rhäticus, a professor at Wittenberg University in Germany, was so intrigued by Copernicus ’ work that he visited the astronomer and ended up spending two years with him.
وسنة ١٥٣٦ ،‏ كتب الكردينال شونبورڠ الى كوپرنيكوس يحثه على نشر كتاب مفصّل عن اعماله .‏