1468 - Birth of Johann Werner, German mathematician
1848 - Birth of Benjamin Baillaud, French astronomer
1894 - Death of Eugène Charles Catalan, Belgian mathematician
1898 - Birth of Fritz Zwicky, Swiss-American physicist and astronomer
1943 - Death of David Hilbert, German mathematician
1946 - ENIAC ("Electronic Numerical Integrator and Computer"), the first general-purpose electronic computer, unveiled at the University of Pennsylvania.
1961 - Lawrencium is first synthesized at the University of California.
1975 - Death of Julian Huxley, British biologist
1989 - The first of 24 satellites of the Global Positioning System is placed into orbit.
2003 - Death of Dolly the sheep, first cloned mammal