1520 in science
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The year 1520 in science and technology included many events, some of which are listed here.
Botany
- Publication of Le Grant Herbier ("The Great Herbal") 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.{{Citation|url=http://www.newadvent.org/cathen/09526b.htm|title=Ferdinand Magellan|publisher=New Advent|work=Catholic Encyclopedia|accessdate=2007-01-14}}
Births
- approx. date – Vincenzo Galilei, Italian scientist and musician (died 1591)
- Agatha Streicher, German physician (died 1581)
Deaths
- approx. date – Pedro Álvares Cabral, Portuguese explorer (b. c. 1467/8).