Total Eclipse of the Sun: 1793 March 12http://astro.ukho.gov.uk/eclipse/0211793/
Grækarismessa, the feast day of St. Gregory, on Faroe Island is on March 12 http://en.wiktionary.org/wiki/gr%C3%A6karismessa
Building of the Cordouan lighthouse began in 1584http://en.wikipedia.org/wiki/Cordouan_Lighthouse
Kosmos 60 was an E-6 series probe, launched by the Soviet Union on March 12, 1965.http://en.wikipedia.org/wiki/Cosmos_60The Soviet Mars 6 lander arrived at Mars on 12 March 1974.http://astronomy.activeboard.com/t44272675/mars-6-mission/Soyuz T-4 was launched on the 12th March 2014http://en.wikipedia.org/wiki/Soyuz_T-4
Walter Marty Schirra, Jr. (March 12, 1923 - May 3, 2007) was one of the original Mercury 7 astronautshttp://astronomy.activeboard.com/t11549393/walter-schirra/John Aubrey (12 March 1626 - 7 June 1697) was an English antiquaryhttp://en.wikipedia.org/wiki/John_AubreyJohn David Linsley (12 March 1925 - 25 September 2002) was an American physicist http://en.wikipedia.org/wiki/John_LinsleyChristopher Stubbs (born March 12, 1958) is an experimental physicisthttp://en.wikipedia.org/wiki/Christopher_StubbsJohann Caspar Horner (12 March 1774 - 3 November 1834) was a Swiss physicisthttp://en.wikipedia.org/wiki/Johann_Caspar_Horner
John Theophilus Desaguliers (12 March 1683 29 February 1744) was a French-born British natural philosopherhttps://en.wikipedia.org/wiki/John_Theophilus_DesaguliersCristopher David Moore (born March 12, 1968) is an American computer scientisthttp://en.wikipedia.org/wiki/Cristopher_MooreFrederick Charles Leonard (March 12, 1896 - June 23, 1960) was an American astronomer.http://en.wikipedia.org/wiki/Frederick_C._LeonardSimon Newcomb (March 12, 1835 - July 11, 1909) was a Canadian-American astronomer and mathematicianhttp://en.wikipedia.org/wiki/Simon_NewcombEllen Dorrit Hoffleit (March 12, 1907 - April 9, 2007) was an American senior research astronomer at Yale University.http://astronomy.activeboard.com/t10116962/dorrit-hoffleit/12 March, 2003: The oldest human footprints were found in volcanic ash in Italy.http://news.bbc.co.uk/1/hi/sci/tech/2844287.stm
The Andromeda Strain is a 1971 American science-fiction film, based on the novel published in 1969http://astronomy.activeboard.com/t48226023/the-andromeda-strain/
NGC 2371 was discovered by William Herschel on the 12th March 1785.http://astronomy.activeboard.com/t16512254/ngc-2371/NGC 2909 was discovered by John Herschel on the 12th March 1828.http://astronomy.activeboard.com/t56990917/ngc-2909/NGC 3301 was discovered by William Herschel on the 12th March 1784.http://astronomy.activeboard.com/t56990933/ngc-3301/
M109B (NGC 3953) was observed by Pierre Méchain on March 12, 1781http://astronomy.activeboard.com/t57106529/ngc-3953/NGC 3992 was discovered by Pierre Méchain on the 12th March 1781.http://astronomy.activeboard.com/t56990989/ngc-3992/
Exoplanet HD 24040 b was discovered on the 12th March 2006.http://en.wikipedia.org/wiki/HD_24040_bAsteroid (113) Amalthea was discovered by R. Luther on March 12, 1871.http://en.wikipedia.org/wiki/113_AmaltheaAsteroid (362) Havnia was discovered by Auguste Charlois on March 12, 1893http://en.wikipedia.org/wiki/362_Havnia
A meteor was observed over Cape Town on the 12th March 2013http://astronomy.activeboard.com/t52965686/cape-town-meteor/
MeteoritesThe Salles (L5) meteorite fell in Rhone-Alpes, France, on the 12th March, 1798.http://astronomy.activeboard.com/t48226028/salles-meteorite/The Kuleschovka (L6) meteorite fell in Sumy, Ukraine, on the 12th March, 1811.http://astronomy.activeboard.com/t48226040/kuleschovka-meteorite/The Bjurböle (L/LL4) meteorite fell in Uusimaa, Finland, on the 12th March, 1899.http://astronomy.activeboard.com/t5279042/bjurble-meteorite-fall/
The Lowicz (Mesosiderite) meteorite fell in Skierniewice, Poland, on the 12th March, 1935.http://astronomy.activeboard.com/t48226057/lowicz-meteorite/The Silao (H5) meteorite fell in Guanajuato, Mexico, on the 12th March, 1995.http://astronomy.activeboard.com/t48226033/silao-meteorite/