The year 1573 in science and technology included many events, some of which are listed here.
Astronomy
• Tycho Brahe publishes De Stella Nova. ==Medicine==
Medicine
• Publication of the Chirurgia Magna of Paracelsus, a translation into Latin of his work on surgery, Die grosse Wundartzney (1536), in Basel, allowing its wider dissemination throughout Europe. ==Births==