1539 in science

The year 1539 in science and technology included many events, some of which are listed here.

• Hieronymus Bock publishes the first edition of his flora of Germany, the Kreutterbuch, adopting a new system of classification based on his observations.

• Olaus Magnus publishes his Carta marina in Italy, the first detailed map of Scandinavia.^[1]

• May 30 – Hernando de Soto lands at Tampa Bay, Florida.^[1]
• August–September – Francisco de Ulloa explores the Gulf of California.

• Johannes Baptista Montanus is appointed professor of medicine at the University of Padua where he introduces clinical medicine, including bedside examination, into the curriculum, integrating theory and practice.^[2]

• September/October – José de Acosta, naturalist (died 1600)
• exact date unknown – Olivier de Serres, soil scientist (died 1619)

• August – Vannoccio Biringuccio, Italian metallurgist (born 1480)