* Astronomy

Ole Rømer's determination of the speed of light on the 7th and 14th August 1676
http://en.wikipedia.org/wiki/R%C3%B8mer%27s_determination_of_the_speed_of_light#Prediction

The Pulkovo Observatory was opened on the 7th August 1839 
http://en.wikipedia.org/wiki/Pulkovo_Observatory

The Kon-Tiki raft smashed into a reef at Raroia in the Tuamotu Islands on August 7, 1947.
http://astronomy.activeboard.com/t42547853/kon-tiki/

NASA image of Landsat Island taken by Landsat 7 on August 7, 2002.
http://en.wikipedia.org/wiki/Landsat_Island#mediaviewer/File:Landsatisland.jpg

Cosmic ray research began when Victor Hess and 2 assistants flew in a balloon on the 7th August 1912
http://astronomy.activeboard.com/t49730723/victor-francis-hess-1883-1964/

Kent Vernon Rominger (born August 7, 1956) is a former American astronaut
http://en.wikipedia.org/wiki/Kent_Rominger

José Moreno Hernández (born August 7, 1962), is an American engineer and a former NASA astronaut.
http://en.wikipedia.org/wiki/Jose_Moreno_Hernandez

Louis Seymour Bazett Leakey (L.S.B. Leakey) (7 August 1903 - 1 October 1972) was a British archaeologist and naturalist 
http://astronomy.activeboard.com/t50324596/louis-leakey-1903-1972/

James Bowdoin II (August 7, 1726 - November 6, 1790) was a political leader during the American Revolution.
http://en.wikipedia.org/wiki/James_Bowdoin

David John Eicher (born August 7, 1961) is an American editor, writer, and populariser of astronomy and space.
http://en.wikipedia.org/wiki/David_J._Eicher

Maarten van den Hove (1605 - 7 August 1639) was a Dutch astronomer
http://en.wikipedia.org/wiki/Martin_van_den_Hove

Philip Herbert Cowell (7 August 1870, Calcutta - 6 June 1949) was a British astronomer
http://en.wikipedia.org/wiki/Philip_Herbert_Cowell

Andrew Ainslie Common (1841 - 1903) was an English amateur astronomer
http://en.wikipedia.org/wiki/Andrew_Ainslie_Common

NGC 6407 was discovered by British astronomer John Herschel on the 7th August 1834. 
http://astronomy.activeboard.com/t58255081/ngc-6407/

NGC 6629 was discovered by German-British astronomer William Herschel on the 7th August 1784.
http://astronomy.activeboard.com/t58255099/ngc-6629/

NGC 6642 was discovered by German-British astronomer William Herschel on the 7th August 1784.
http://astronomy.activeboard.com/t58255056/ngc-6642/

NGC 6717 was discovered by German-British astronomer William Herschel on the 7th August 1784.
http://astronomy.activeboard.com/t58255040/ngc-6717/

NGC 6739 (also ESO 141-28 and PGC 62799) is a magnitude +12.2 spiral galaxy located 195 million light-years away in the constellation Pavo.
The galaxy was discovered by British astronomer John Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflecting telescope at the Cape of Good Hope on the 7th August 1834. 
http://astronomy.activeboard.com/t58255004/ngc-6739/

NGC 6813 was discovered by Albert Marth on the 7th August 1864.
http://astronomy.activeboard.com/t60606271/ngc-6813/

NGC 7346 (also PGC 69430) is a magnitude +14.6 elliptical galaxy located 527 million light-years in the constellation Pegasus.
The galaxy was discovered by German astronomer Albert Marth using a 121.92 cm (48 inch) reflector in Tigne' Point, Malta on the 7th August 1864.
http://astronomy.activeboard.com/t58255000/ngc-7346/

NGC 7348 (also IRAS 22381+1138, MCG 2-57-10, UGC 12142 and PGC 69463) is a magnitude +13.9 barred spiral galaxy located 336 million light-years in the constellation Pegasus.
The galaxy was discovered by German astronomer Albert Marth using a 121.92 cm (48 inch) reflector in Tigne' Point, Malta on the 7th August 1864.
http://astronomy.activeboard.com/t58254985/ngc-7348/

NGC 7350 was discovered by German astronomer Albert Marth on the 7th August 1864.
http://astronomy.activeboard.com/t58254978/ngc-7350/

NGC 7353 (also MCG+02-57-8, UGC 12134 and PGC 85285) is a magnitude +13.5 spiral galaxy located in the constellation Pegasus.
The galaxy was discovered by German astronomer Albert Marth using a 121.92 cm (48 inch) reflector in Tigne' Point, Malta on the 7th August 1864.
http://astronomy.activeboard.com/t58254958/ngc-7353/

NGC 7366 (also MCG 2-58-4 and PGC 69629) is a magnitude +14.3 spiral galaxy located 534 million light-years away in the constellation Pegasus.
The galaxy was discovered by German astronomer Albert Marth using a 121.92 cm (48 inch) reflector in Tigne' Point, Malta on the 7th August 1864.
http://astronomy.activeboard.com/t58254947/ngc-7366/

NGC 7370 (also MCG 2-58-5 and PGC 69662) is a magnitude +15.3 spiral galaxy located in the constellation Pegasus.
The galaxy was discovered by German astronomer Albert Marth using a 121.92 cm (48 inch) reflector in Tigne' Point, Malta on the 7th August 1864.
http://astronomy.activeboard.com/t58254939/ngc-7370/

NGC 7372 (also MCG 2-58-5 and PGC 69670) is a magnitude +13.5 spiral galaxy located 538 million light-years away in the constellation Pegasus.
The galaxy was discovered by German astronomer Albert Marth using a 121.92 cm (48 inch) reflector in Tigne' Point, Malta on the 7th August 1864.
http://astronomy.activeboard.com/t58254926/ngc-7372/

NGC 7374 (also IRAS 22435+1035, MCG 2-58-7 and PGC 69676) is a magnitude +13.8 spiral galaxy located 326 million light-years away in the constellation Pegasus.
The galaxy was discovered by German astronomer Albert Marth using a 121.92 cm (48 inch) reflector in Tigne' Point, Malta on the 7th August 1864.
http://astronomy.activeboard.com/t58254915/ngc-7374/

NGC 7380 was discovered by German astronomer Caroline Herschel on the 7th August 1787.
http://astronomy.activeboard.com/t58254897/ngc-7380/