Andreas Osiander (Andreas Hosemann) (1498 - 1552) was a German Protestant theologian. 1498 was a common year starting on Saturday (see link for calendar) of the Gregorian calendar. ... Events April - War between Henry II of France and Emperor Charles V. Henry invades Lorraine and captures Toul, Metz, and Verdun. ... Theology is reasoned discourse concerning God (Greek θεος, theos, God, + λογος, logos, word or reason). It can also refer to the study of other religious topics. ...

In 1523, he persuaded Albert of Prussia, Grand Master of the Teutonic Knights, to convert to the Lutheran faith. Events April - Battle of Villalar - Forces loyal to Emperor Charles V defeat the Comuneros, a league of urban bourgeois rebelling against Charles in Spain. ... Albert (May 16, 1490 - March 20, 1568), (Albertus in Latin, Albrecht in German) Grand Master of the Teutonic Order and first duke of Ducal Prussia, was the third son of Frederick of Hohenzollern, prince of Ansbach and Bayreuth, and Sophia, daughter of Casimir IV Jagiello Grand Duke of Lithuania and... Teutonic Knights, charging into battle. ...

In 1543, Osiander oversaw the publication of the book De revolutionibus orbium coelestium (On the revolution of celestial spheres) by Copernicus, and added an unsigned preface explaining that the model described in the book was not intended as a description of the way the Universe really is, but as a mathematical device to simplify calculations involving the movement of planets (from Science: A History by John Gribbin). // Events February 21 - Battle of Wayna Daga - A combined army of Ethiopian and Portuguese troops defeat the armies of Adal led by Ahmed Gragn. ... Title page of De revolutionibus De revolutionibus orbium coelestium (English: On the Revolutions of the Heavenly Spheres, Polish: O obrotach sfer niebieskich) is the seminal work on heliocentric theory and the masterpiece of the great Polish astronomer Nicolaus Copernicus. ... Nicolaus Copernicus (in Latin; Polish Mikołaj Kopernik, German Nikolaus Kopernikus - February 19, 1473 – May 24, 1543) was a Polish astronomer, mathematician and economist who developed a heliocentric (Sun-centered) theory of the solar system in a form detailed enough to make it scientifically useful. ...

His niece married the future-Archbishop of Canterbury, Thomas Cranmer. Thomas Cranmer (July 2, 1489 - March 21, 1556) was the protestant Archbishop of Canterbury during the reigns of the English kings Henry VIII and Edward VI. He wrote two prayerbooks and is considered to be the founder of the Church of England. ...