1972 – Apollo 16 astronauts John Young and Charles Duke explored the surface of the moon.


Apollo 16 logo.

Apollo 16 changed the way scientists think of the Moon. On April 21, 1972, Commander John W. Young and Charles M. Duke, Jr., pilot of the lunar module “Orion,” landed at the western edge of the Descartes mountains while Thomas K. Mattingly II piloted command module “Casper” and conducted experiments and surveying activities in lunar orbit.

solarsystem.nasa.gov

2016 – The U.S. Treasury Department announced a plan for Harriet Tubman to replace Andrew Jackson as the portrait on the $20 bill.


The trump admin went out of its way to block it … a reminder – WASHINGTON (Reuters) – The U.S. Treasury will not introduce a redesigned $20 bill picturing escaped slave and abolitionist Harriet Tubman next year as planned, Treasury Secretary Steven Mnuchin said on Wednesday. This was during the era of trump

history… April 20


1139 – The Second Lateran Council opened in Rome.

1534 – Jacques Cartier, a French explorer, set sail from St. Malo to explore the North American coastline.

1653 – In England, Oliver Cromwell expelled the Long Parliament for trying to pass the Perpetuation Bill that would have kept Parliament in the hands of only a few members.

1657 – English Admiral Robert Blake fought his last battle when he destroyed the Spanish fleet in Santa Cruz Bay.

1689 – The siege of Londonderry began. Supporters of James II attacked the city.

1769 – Ottawa Chief Pontiac was murdered by an Illinois Indian in Cahokia.

1775 – American troops began the siege of British-held Boston.

1792 – France declared war on Austria, Prussia, and Sardinia. It was the start of the French Revolutionary wars.

1809 – Napoleon defeated Austria at Battle of Abensberg, Bavaria.

1832 – Hot Springs National Park was intially created by an act of the U.S. Congress. It was the first time a piece of land was set aside by the U.S. government to preserve the area for recreation. The area was made a national park on March 4, 1921.

1836 – The U.S. territory of Wisconsin was created by the U.S. Congress.

1837 – Erastus B. Bigelow was granted a patent for his power loom.

1841 – In Philadelphia, PA, Edgar Allen Poe’s first detective story, “The Murders in the Rue Morgue,” was published in Graham’s Magazine.

1861 – Robert E. Lee resigned from U.S. Army.

1865 – Safety matches were first advertised.

1879 – First mobile home (horse drawn) was used in a journey from London to Cyprus.

1902 – Scientists Marie and Pierre Curie isolated the radioactive element radium.

1912 – Fenway Park opened as the home of the Boston Red Sox.

1916 – Sir Roger Casement landed in Ireland to incite rebellion against the British. Casement, a British diplomat, was captured within hours and was hanged for high treason on August 3.

1916 – Chicago’s Wrigley Field held its first Cubs game with the first National League game at the ballpark. The Cubs beat the Cincinnati Reds 7-6 in 11 innings.

1919 – The Polish Army captured Vilno, Lithuania from the Soviets.

1940 – The First electron microscope was demonstrated by RCA.

1942 – Pierre Laval, the premier of Vichy France, in a radio broadcast, establishes a policy of “true reconciliation with Germany.”

1945 – Soviet troops began their attack on Berlin.

1945 – During World War II, Allied forces took control of the German cities of Nuremberg and Stuttgart.

1953 – Operation Little Switch began in Korea. It was the exchange of sick and wounded prisoners of war. Thirty Americans were freed.

1953 – The Boston marathon was won by Keizo Yamada with a record time of 2:18:51.

1959 – “Desilu Playhouse” on CBS-TV presented a two-part show titled “The Untouchables.”

1961 – FM stereo broadcasting was approved by the FCC.

1962 – The New Orleans Citizens’ Council offered a free one-way ride for blacks to move to northern states.

1967 – U.S. planes bombed Haiphong for first time during the Vietnam War.

1971 – The U.S. Supreme Court upheld the use of busing to achieve racial desegregation in schools.

1972 – The manned lunar module from Apollo 16 landed on the moon.

1977 – Woody Allen’s film “Annie Hall” premiered.

1981 – A spokesman for the U.S. Nave announced that the U.S. was accepting full responsibility for the sinking of the Nissho Maru on April 9.

1982 – The Activision game Pitfall! was released for the Atari 2600 game system.

1984 – Britain announced that its administration of Hong Kong would cease in 1997.

1985 – In Madrid, Santiago Carillo was purged from the Communist Party. Carillo was a founder of Eurocommunism.

1987 – In Argentina, President Raul Alfonsin quelled a military revolt.

1988 – The U.S. Air Forces’ Stealth (B-2 bomber) was officially unveiled.

1989 – Scientist announced the successful testing of high-definition TV.

1991 – Mikhail Gorbachev became the first Soviet head of state to visit South Korea.

1992 – The worlds largest fair, Expo ’92, opened in Seville, Spain.

1998 – Kenyan runner Moses Tanui, 32, won the Boston Marathon for the second time. He also registered the third fastest time with 2 hours 7 minutes and 34 seconds.

1999 – Jane Seymour received a star on the Hollywood Walk of Fame.

2016 – The U.S. Treasury Department announced a plan for Harriet Tubman to replace Andrew Jackson as the portrait on the $20 bill.

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