1520 in science

Botany

• Publication of Le Grant Herbier in Paris.

  Exploration

• November 1–28 – Ferdinand Magellan's fleet makes the first passage of the Strait of Magellan and he names the Pacific Ocean.

  Births

• approx. date – Vincenzo Galilei, Italian scientist and musician
• Agatha Streicher, German phycisian

  Deaths

• approx. date – Pedro Álvares Cabral, Portuguese explorer.