* Astronomy

The Spanish carrack Nao Victoria was the first ship to successfully circumnavigate the world in 1522.
http://astronomy.activeboard.com/t44826900/nao-victoria/

The Nuestra Señora de Atocha Spanish ship sank in 1622 off the Florida Keys
http://en.wikipedia.org/wiki/Nuestra_Se%C3%B1ora_de_Atocha

The Blackfriars shipwrecks were a series of wrecks discovered on 6 September 1962
http://en.wikipedia.org/wiki/Blackfriars_Ships

The Battle of Barking Creek was a friendly fire incident that happened on 6 September 1939
http://en.wikipedia.org/wiki/Battle_of_Barking_Creek

Bryan Daniel O'Connor (born September 6, 1946) is a retired United States Marine Corps Colonel and former NASA astronaut.
http://en.wikipedia.org/wiki/Bryan_D._O%27Connor

Carl Erwin Walz (Colonel, USAF, Ret.) (born September 6, 1955) is a former NASA astronaut
https://en.wikipedia.org/wiki/Carl_E._Walz

Irina Bayanovna Solovyova (born September 6, 1937) is a retired Soviet cosmonaut.
http://en.wikipedia.org/wiki/Irina_Solovyova

Major-General Dr Walter Robert Dornberger (6 September 1895 - 27 June 1980) was a German Army artillery officer 
http://astronomy.activeboard.com/t44826770/major-general-dr-walter-robert-dornberger-1895-1980/

Algoritmi (c. 780, Khwarizm - c. 850) was a Persian mathematician
http://en.wikipedia.org/wiki/Al_Khwarizmi

John Dalton FRS (6 September 1766 - 27 July 1844) was an English chemist
http://en.wikipedia.org/wiki/John_Dalton

James Melville Gilliss (1811 - 1865) was an astronomer
http://en.wikipedia.org/wiki/James_Melville_Gilliss

John Henry Dallmeyer (September 6, 1830 - December 30, 1883) was an Anglo-German optician
http://en.wikipedia.org/wiki/John_Henry_Dallmeyer

Charles Hugh Smiley (September 6, 1903-July 26, 1977) was an American astronomer 
http://en.wikipedia.org/wiki/Charles_Hugh_Smiley

Charles Donald Shane (September 6, 1895 - March 19, 1983) was an American astronomer 
http://en.wikipedia.org/wiki/C._Donald_Shane

Yrjö Väisälä (6 September 1891 - 21 July 1971) was a Finnish astronomer 
http://astronomy.activeboard.com/t44826802/yrj-visl-1891-1971/

Stephen C. Singer-Brewster (a.k.a. Stephen C. Brewster) is an American astronomer.
https://en.wikipedia.org/wiki/Stephen_Singer-Brewster

Sir Edward Victor Appleton (6 September 1892 - 21 April 1965) was an English physicist.
http://en.wikipedia.org/wiki/Edward_Victor_Appleton

NGC 98 was discovered by British astronomer John Herschel on the 6th September 1834. 
http://astronomy.activeboard.com/t58485048/ngc-98/

NGC 307 was discovered by John Herschel on the 6th September 1831.
http://astronomy.activeboard.com/t60823844/ngc-307/

NGC 458 was discovered by Scottish astronomer James Dunlop on the 6th September 1826.
http://astronomy.activeboard.com/t58485034/ngc-458/

NGC 6138 was discovered by French astronomer Edouard Stephan on possibly the 6th or 11th September 1872.
http://astronomy.activeboard.com/t58140078/ngc-6138/

NGC 7079 was discovered by British astronomer John Herschel on the 6th September 1834. 
http://astronomy.activeboard.com/t58485026/ngc-7079/

NGC 7080 was discovered by German astronomer Albert Marth on the 6th September 1863.
http://astronomy.activeboard.com/t58485021/ngc-7080/

NGC 7400 was discovered by British astronomer John Herschel on the 6th September 1834. 
http://astronomy.activeboard.com/t58485016/ngc-7400/

NGC 7420 was discovered by German astronomer Albert Marth on the 6th September 1863.
http://astronomy.activeboard.com/t58485011/ngc-7420/

NGC 7697 was discovered by British astronomer John Herschel on the 6th September 1836. 
http://astronomy.activeboard.com/t58485003/ngc-7697/

NGC 7716 was discovered by British astronomer John Herschel on the 6th September 1831. 
http://astronomy.activeboard.com/t58484998/ngc-7716/

NGC 7718 was discovered by German astronomer Albert Marth on the 6th September 1863.
http://astronomy.activeboard.com/t58484986/ngc-7718/

NGC 7745 was discovered by German astronomer Albert Marth on the 6th September 1863.
http://astronomy.activeboard.com/t58484980/ngc-7745/