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Post Info TOPIC: October 21st


L

Posts: 131433
Date:
October 21st
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The metre was defined in 1983 (Resolution 1 of the 17th meeting of the CGPM) 
http://astronomy.activeboard.com/t45549631/the-metre/

The Medicine Lodge Treaty was signed October 21, 1867
http://en.wikipedia.org/wiki/Medicine_Lodge_Treaty

The Aberfan disaster occurred in the Welsh village of Aberfan on Friday 21 October 1966
http://en.wikipedia.org/wiki/Aberfan_disaster

The first official planetarium public showing at the Deutsches Museum in Munich, Germany on October 21, 1923 
http://en.wikipedia.org/wiki/Max_Wolf#Life_at_the_university

The Ladd Observatory was opened on the 21st October 1891
https://en.wikipedia.org/wiki/Ladd_Observatory

Yerkes Observatory was founded on the 21st October 1897
http://astro.uchicago.edu/yerkes/

The islands of Saint-Pierre and Miquelon were discovered by Europeans on 21 October 1520
http://en.wikipedia.org/wiki/Saint-Pierre_and_Miquelon#History



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The Battle of Trafalgar, 21 October 1805
http://fr.wikipedia.org/wiki/Bataille_de_Trafalgar

USS Constitution was launched in 1797
http://astronomy.activeboard.com/t45698183/uss-constitution/

The first pair of satellites for Europe's Galileo global navigation satellite system was launched on the 21st October 2011.
http://astronomy.activeboard.com/t45405971/galileo-iov/



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People

Ronald Ervin McNair, Ph.D. (October 21, 1950 - January 28, 1986) was a NASA astronaut.
http://en.wikipedia.org/wiki/Ronald_E._McNair

Eugene Burton Ely (October 21, 1886 - October 19, 1911) was an aviation pioneer
http://en.wikipedia.org/wiki/Eugene_Burton_Ely

Edward Ball Knobel (21 October 1841 - 25 July 1930) was an English amateur astronomer.
http://en.wikipedia.org/wiki/Edward_Knobel

Robert Sutton Harrington (October 21, 1942 - January 23, 1993) was an American astronomer
http://en.wikipedia.org/wiki/Robert_Sutton_Harrington

Srinagarindra (21 October 1900 - 18 July 1995) was a member of the Thai Royal Family
http://en.wikipedia.org/wiki/Srinagarindra#Stargazer

Richard Carlton Meredith (October 21, 1937 - March 8, 1979), was an American writer
http://en.wikipedia.org/wiki/Richard_C._Meredith

Samuel W. Alderson (October 21, 1914 - February 11, 2005) was an inventor
http://en.wikipedia.org/wiki/Samuel_W._Alderson

Carrie Frances Fisher (October 21, 1956 - December 27, 2016) was an American actress
http://astronomy.activeboard.com/t51255159/carrie-frances-fisher/

Wolfgang Ketterle (born 21 October 1957) is a German physicist
http://en.wikipedia.org/wiki/Wolfgang_Ketterle

Harry Schultz Vandiver (21 October 1882 - 9 January 1973) was an American mathematician
http://en.wikipedia.org/wiki/Harry_Vandiver

Martin Gardner (October 21, 1914 - May 22, 2010) was an American popular mathematics
http://en.wikipedia.org/wiki/Martin_Gardner

Nicolaus Bernoulli (21 October 1687 - 29 November 1759) was a Swiss mathematician
http://en.wikipedia.org/wiki/Nicolaus_I_Bernoulli

Enrico Betti (21 October 1823 - 11 August 1892) was an Italian mathematician
http://en.wikipedia.org/wiki/Enrico_Betti

Alfred Bernhard Nobel (21 October 1833 - 10 December 1896) was a Swedish chemist
http://astronomy.activeboard.com/t45698141/alfred-bernhard-nobel-1833-1896/

The Valentich disappearance describes an event on 21 October 1978
http://astronomy.activeboard.com/t45697958/valentich-disappearance/



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NGC Discovered

NGC 5 is a magnitude +14.3 elliptical galaxy discovered by Edouard Stephan on the 21st October 1881.
http://astronomy.activeboard.com/t58822134/ngc-5/

NGC 47 is a magnitude +13.1 spiral galaxy discovered by Wilhelm Tempel in 1886.
http://astronomy.activeboard.com/t58822039/ngc-47/

NGC 605 is a magnitude +12.9 spiral galaxy discovered by Edouard Stephan on the 21st October 1881.
http://astronomy.activeboard.com/t58822005/ngc-605/

NGC 1250 is a magnitude +12.9 spiral galaxy discovered by Lewis A. Swift on the 21st October 1886.
http://astronomy.activeboard.com/t58821984/ngc-1250/

NGC 1259 is a magnitude +14.3 spiral galaxy discovered by Guillaume Bigourdan on the 21st October 1884.
http://astronomy.activeboard.com/t58821968/ngc-1259/



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Asteroid (76) Freia was discovered by the astronomer Heinrich d'Arrest on October 21, 1862, in Copenhagen, Denmark.
http://en.wikipedia.org/wiki/76_Freia

Asteroid (208) Lacrimosa was discovered by Austrian astronomer Johann Palisa on October 21, 1879, in Pola.
http://en.wikipedia.org/wiki/208_Lacrimosa

Comet Ikeya-Seki on October 21,1965, passed just 450,000 km above the Sun's surface
http://astronomy.activeboard.com/t45698214/comet-ikeya-seki/



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Meteorites

The Favars (H5) meteorite fell in Midi-Pyrenees, France, on the 21st October 1844.
http://astronomy.activeboard.com/t45697980/favars-meteorite/

The Hvittis (EL6) meteorite fell in Turku Ja Pori, Finland, on the 21st October 1901.
http://astronomy.activeboard.com/t45697975/hvittis-meteorite/



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