Construction of the Lovell Telescope began on 3 September 1952http://en.wikipedia.org/wiki/Lovell_Telescope
The 2010 Canterbury earthquakehttp://en.wikipedia.org/wiki/2010_Canterbury_earthquake
British Declaration Of War - Radio Broadcast - 3 Sept 1939https://www.youtube.com/watch?v=rtJ_zbz1NyYThe Battle of Cooch's Bridge was fought on September 3, 1777http://astronomy.activeboard.com/t50656391/battle-of-coochs-bridge/The Allied invasion of mainland Italy on September 3, 1943http://en.wikipedia.org/wiki/Allied_invasion_of_ItalyThe monastic community of San Marino was founded on 3 September 301http://en.wikipedia.org/wiki/San_MarinoDagen H (H day), today mostly called "Högertrafikomläggningen", was on 3 September 1967http://en.wikipedia.org/wiki/Dagen_HThe 34th Mersenne prime was announced on 3 September 1996http://astronomy.activeboard.com/t31611818/mersenne-prime/
Viking 2 landed on Mars in 1976.http://astronomy.activeboard.com/t44304495/viking-2-mission/SMART-1 impacted the Moon in 2006http://astronomy.activeboard.com/t3187813/smart-1/Sir Malcolm Campbell set his final land speed record on 3 September 1935http://en.wikipedia.org/wiki/Malcolm_Campbell#Land_speed_record
Fredrik Carl Mülertz Størmer (September 3, 1874 - August 13, 1957) was a Norwegian mathematicianhttp://en.wikipedia.org/wiki/Carl_St%C3%B8rmerLev Semenovich Pontryagin (3 September 1908 - 3 May 1988) was a Russian mathematicianhttp://en.wikipedia.org/wiki/Lev_Semenovich_PontryaginCarl David Anderson (3 September 1905 - 11 January 1991) was an American physicisthttp://en.wikipedia.org/wiki/Carl_David_AndersonPrudence Crandall (September 3, 1803 - January 28, 1890) was a schoolteacher http://en.wikipedia.org/wiki/Prudence_CrandallCherry Barbara Grimm (3 September 1930 - 14 March 2002) was a science fiction and fantasy writer http://en.wikipedia.org/wiki/Cherry_WilderStephen Philip "Steve" Jones (born 3 September 1955) is an English rock guitaristhttp://en.wikipedia.org/wiki/Steve_Jones_(musician)Gerald 'Gerry' Neugebauer (3 September 1932 - 26 September 2014) was an American astronomerhttp://en.wikipedia.org/wiki/Gerald_NeugebauerLyudmila Karachkina (born 3 September 1948) is a former Soviet/Ukrainian astronomerhttp://en.wikipedia.org/wiki/Lyudmila_KarachkinaRalph Copeland (3 September 1837 - 27 October 1905) was an English astronomer http://en.wikipedia.org/wiki/Ralph_CopelandEdward Pigott (1753 - 27 June 1825) was an English astronomer,http://en.wikipedia.org/wiki/Edward_PigottHeinrich Christian Schumacher (September 3, 1780 - December 28, 1850) was a German-Danish astronomer.http://en.wikipedia.org/wiki/Heinrich_Christian_Schumacher
The last time Mars occulted Sigma Sagittarii was on September 3, 423http://en.wikipedia.org/wiki/Sigma_SagittariiDelta Cancri was involved in the first recorded occultation by Jupiter on September 3, B.C. 240http://en.wikipedia.org/wiki/Delta_Cancri#HistoryThe Teen Age Message, was sent to 47 Ursae Majoris on September 3, 2001http://en.wikipedia.org/wiki/Teen_Age_Message
NGC 6620 was discovered by American astronomer Edward Charles Pickering on the 3rd September 1880.http://astronomy.activeboard.com/t58461130/ngc-6620/NGC 6829 was discovered by American astronomer Lewis A. Swift on the 3rd September 1886.http://astronomy.activeboard.com/t58461122/ngc-6829/NGC 6831 was discovered by American astronomer Lewis A. Swift on the 3rd September 1886.http://astronomy.activeboard.com/t58461113/ngc-6831/NGC 7030 was discovered by American astronomer Francis Preserved Leavenworth on the 3rd September 1885.http://astronomy.activeboard.com/t58461103/ngc-7030/NGC 7121 was discovered by French astronomer Edouard Stephan on the 3rd September 1872.http://astronomy.activeboard.com/t58461183/ngc-7121/NGC 7241 was discovered by French astronomer Edouard Stephan on the 3rd September 1872.http://astronomy.activeboard.com/t58461017/ngc-7241/
Nova Circini 1926 was observed at magnitude 6.5 on 3 September 1926http://astronomy.activeboard.com/t54841577/x-circini/J002E3 was a supposed asteroid discovered on September 3, 2002http://en.wikipedia.org/wiki/J002E3
Asteroid 230 Athamantis was discovered by the German-Austrian astronomer K. de Ball on September 3, 1882, in Bothkamp.https://en.wikipedia.org/wiki/230_AthamantisAsteroid 250 Bettina was discovered on September 3, 1885http://astronomy.activeboard.com/t54842045/asteroid-250-bettina/
The Exeter incident was a highly publicized UFO sighting that occurred on September 3, 1965 approximately 5 miles from Exeter, New Hampshire, in the neighbouring community of Kensington. http://en.wikipedia.org/wiki/Exeter_incidentA meteor exploded over Antarctica on Sept. 3, 2004, with the energy of 13,000 to 28,000 tons of TNThttp://astronomy.activeboard.com/t3917291/antarctic-meteor/
MeteoritesThe Lissa (L6) meteorite fell in Stredocesky, Czech Republic, on the 3rd September, 1808.http://astronomy.activeboard.com/t44790360/lissa-meteorite/The Grzempach (H5) meteorite fell in Pila, Poland, on the 3rd September, 1910.http://astronomy.activeboard.com/t44790361/grzempach-meteorite/The Santa Cruz (CM2) meteorite fell in Tamaulipas, Mexico, on the 3rd September, 1939.http://astronomy.activeboard.com/t44790362/santa-cruz-meteorite/