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- Hits: 656
392 - Roman Emperor Theodosius declares Christian religion, state religion
1889 - Montana admitted as 41st state of the Union
1895 - German physicist Wilhelm Röntgen produces and detects electromagnetic radiation in a wavelength range today known as X-rays or Röntgen rays
1977 - Manolis Andronikos, a Greek Archaeologist and professor at the Aristotle University of Thessaloniki, discovers the tomb of Philip II of Macedon at Vergina.
1980 - Voyager 1 space probe discovers 15th moon of Saturn
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- Hits: 657
1492 - The Ensisheim Meteorite, the oldest meteorite with a known date of impact, strikes the earth around noon in a wheat field outside the village of Ensisheim, Alsace, France.
1631 - Pierre Gassendi observes transit of Mercury predicted by Kepler
1775 - Lord Dunmore promises freedom to male slaves who join British army
1875 - Verney Cameron is 1st European to cross equitorial Africa
1966 - Lunar Orbiter 2 launched by US
2012 - 48 people are killed by a magnitude 7.3 earthquake in Guatemala
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- Hits: 336
1528 - Shipwrecked Spanish conquistador Álvar Núñez Cabeza de Vaca becomes the first known European to set foot in Texas.
1572 - Supernova is observed in constellation known as Cassiopeia
1903 - USA recognizes independence of Panama
1918 - Republic of Poland proclaimed
1985 - 22nd Space Shuttle Mission (61A) -Challenger 9- lands at Edwards AFB
1985 - Space shuttle Challenger lands at Edwards, Calif
INTERNATIONAL DAY FOR PREVENTING THE EXPLOITATION OF THE ENVIRONMENT IN WAR AND ARMED CONFLICT
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1492 - Christopher Columbus learns of maize (corn) from Indians of Cuba
1743 - Coordinated scientific observations of the transit of Mercury were organized by Joseph-Nicolas Delisle.
1838 - Honduras declares independence of Central American Federation
1967 - ATS-3 launched by US to take first pictures of full Earth disc
1994 - Space probe Ulyssus completes 1st passage behind the Sun
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1675 - Storm hits Western Europe: flood in Amsterdam.
1861 - University of Washington founded in Seattle.
1866 - Kingdom of Italy annexes Venetia.
1952 - Earthquake & flood strike Kamshatka-South America
1966 - Flooding of Arno River (Italy) destroys countless art works, kills 113
2008 - Barack Obama becomes the first African-American to be elected President of the United States.