Portal:History of science/Selected anniversaries/April 30

April 30:

 * 1006 - Supernova SN 1006, the brightest supernova in recorded history, appears in the constellation Lupus


 * 1483 - Orbital calculations suggest that on this day, Pluto moved inside Neptune's orbit until July 23, 1503.


 * 1492 - Spain gives Christopher Columbus his commission of exploration


 * 1696 - Robert Plot, British naturalist (b. 1640)


 * 1723 - Birth of Mathurin Jacques Brisson, French naturalist (d. 1806)


 * 1777 - Birth of Carl Friedrich Gauss, German mathematician (d. 1855)


 * 1829 - Birth of Ferdinand von Hochstetter, Austrian geologist (d. 1884)


 * 1875 - Jean Frederic Waldeck, French explorer, lithographer, and cartographer (b. 1766)


 * 1876 - Birth of Orso Mario Corbino, Italian physicist (d. 1937)


 * 1916 - Birth of Claude Shannon, American engineer and mathematician (d. 2001)