* Astronomy

The highest point of Mont Pelvoux is named after the astronomer Victor Puiseux, who reached it first with his guide Pierre Antoine Barnéoud on August 9, 1848.
http://en.wikipedia.org/wiki/Mont_Pelvoux

The 1912 magnitude 7.8 Mürefte earthquake occurred on 9 August. 
http://en.wikipedia.org/wiki/1912_M%C3%BCrefte_earthquake

"Fat Man" is the codename for the atomic bomb that was detonated over Nagasaki, Japan, by the United States on August 9, 1945.
http://astronomy.activeboard.com/t7943936/nagasaki/

James Wayne Wood (1924 - 1990) was an American astronaut in the X-20 Dyna-Soar program.
http://en.wikipedia.org/wiki/James_W._Wood

Roman Yurievich Romanenko (born August 9, 1971) is a cosmonaut at the Yuri Gagarin Cosmonaut Training Centre.
http://en.wikipedia.org/wiki/Roman_Romanenko

Erich Armand Arthur Joseph Hückel (August 9, 1896 - February 16, 1980) was a German physicist and physical chemist. 
http://en.wikipedia.org/wiki/Erich_H%C3%BCckel

Sigmund Riefler (August 9, 1847 - October 21, 1912) was a German physicist
http://en.wikipedia.org/wiki/Sigmund_Riefler

Francesco Barozzi (9 August 1537 - 23 November 1604) was an Italian mathematician, astronomer and humanist.
http://en.wikipedia.org/wiki/Francesco_Barozzi

Jonathan Homer Lane (August 9, 1819 - May 3, 1880) was an American astrophysicist and inventor.
http://en.wikipedia.org/wiki/Jonathan_Homer_Lane

William Alfred "Willy" Fowler (August 9, 1911 - March 14, 1995) was an American astrophysicist
http://en.wikipedia.org/wiki/William_Alfred_Fowler

Roman Juszkiewicz (9 August 1952 - 28 January 2012) was a Polish astrophysicist
http://en.wikipedia.org/wiki/Roman_Juszkiewicz

Dorothea Klumpke Roberts (August 9, 1861 - October 5, 1942) was an astronomer 
http://en.wikipedia.org/wiki/Dorothea_Klumpke

Mareta N. West (1915 - 1998) was an American astrogeologist 
http://en.wikipedia.org/wiki/Mareta_West

Kristian Lous (9 August 1875 - 24 September 1941) was a Norwegian astronomer.
http://en.wikipedia.org/wiki/Kristian_Lous

Marco Cavagna (1958 - August 9, 2005) was an Italian amateur astronomer.
http://www.brera.mi.astro.it/sormano/cavagna/marcocavagna.html

Albert Francis Arthur Lofley Jones (9 August 1920 - 11 September 2013) was a New Zealand amateur astronomer
http://en.wikipedia.org/wiki/Albert_F._A._L._Jones

Wilbur Norman "Chris" Christiansen (9 August 1913 - 26 April 2007) was a pioneer Australian radio astronomer
http://en.wikipedia.org/wiki/Wilbur_Norman_Christiansen

Rev. James Couper (9 August 1752 - 7 January 1836) was Professor of Astronomy at the University of Glasgow from 1803 to 1836.
http://en.wikipedia.org/wiki/James_Couper_(astronomer)

NGC 582 was discovered by German-Danish astronomer Heinrich Louis d'Arrest on the 9th August 1863.
http://astronomy.activeboard.com/t58275102/ngc-582/

NGC 609 was discovered by German-Danish astronomer Heinrich Louis d'Arrest on the 9th August 1863.
http://astronomy.activeboard.com/t58275078/ngc-609/

NGC 2551 was discovered by German astronomer Ernst Wilhelm Leberecht Tempel on the 9th August 1882.
http://astronomy.activeboard.com/t58275060/ngc-2551/

NGC 6641 was discovered by American astronomer Truman Henry Safford on the 9th August 1866.
http://astronomy.activeboard.com/t58275047/ngc-6641/