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DECEMBER 20

1833 Samuel Mudd (Maryland-born Doctor Accused of Aiding John Wilkes Booth in the Assassination of President Lincoln) Samuel Mudd Medicine Assassination of President Lincoln
1876 Walter Adams (American Astronomer) Walter Adams Astronomy
1901 Robert J. Van de Graaff (Alabama-born Physicist Who Developed the Van de Graaff Particle Accelerator) Robert J. Van de Graaff Physics Subatomic Particles
1955 Michael J. Caduto (Rhode Island-born Children's Science Author) Rhode Island Authors & Illustrators Young-adult Authors Earth & Earth Science
Deaths
Persons of Historic Significance Who Have Died on This Date
1996 Carl Sagan (New York City-born Astronomer, Pulitzer-Prize Winning Author) Carl Sagan Space & Cosmology American Authors 1978 Pultizer Prize for non-Fiction
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1879 Jacksonville, Florida's Southern Bell Telephone Company Is Chartered Jacksonville, Florida Telephone Florida Historical Society
1930 Congress Approves a Federal Fish Hatchery to be Located in Leetown, West Virginia Leetown, West Virginia U.S. Congress Fish WEst Virginia Archive
1940 5.5 Magnitude Earthquake Near Ossipee Lake Is Largest in New Hampshire's Recorded History New Hampshire Earthquakes USGS
1942 7.3 Magnitude Earthquake Leaves 3,000 Dead in Turkey Turkey Earthquakes Death USGS
1946 8.4 Magnitude Earthquake and 10' Wave Kill 1,330 in Japan Japan Earthquakes Ocean Death USGS
1999 NASA Launches the ACRIM3 Satellite to Monitor Variability of Solar Irradiance Space Exploration The Sun NOAA
2005 Federal Judge in Pennsylvania Strikes Down Teaching of Intelligent Design in Schools Pennyslvania Education Evolution Separation of Church and State CNN

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