1569 in science

Astronomy

• A lunar eclipse is observed by Cornelius Gemma.

  Cartography

• The Mercator projection is first used in Gerardus Mercator's world map Nova et Aucta Orbis Terrae Descriptio ad Usum Navigantium Emendata.

  Chemistry

• Paracelsus' major text on chemistry, Archidoxa, is published posthumously in Kraków in Latin translation by Adam Schröter.

  Physiology and medicine

• Girolamo Mercuriale publishes in Venice, covering the ancient history and current practice of physical exercise.

  Economics

• Tomás de Mercado publishes De los tratos de India y tratantes en ellas, linking the Price revolution to the influx of American gold.

  Publications

• Cornelius Gemma publishes De arte cyclognomica in Antwerp.

  Births

• Mutio Oddi, Italian mathematician