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2015 - LIGO
The first observation of gravitational waves is made, announced by the LIGO and Virgo collaborations on 11 February 2016.
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1812 - Fire of Moscow (1812)
Napoleonic Wars: The French Grande Armée enters Moscow. The Fire of Moscow begins as soon as Russian troops leave the city.
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1752 - The British Empire adopts the Gregorian calendar, skipping e
The British Empire adopts the Gregorian calendar, skipping eleven days (the previous day was September 2).
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1993 - Oslo Accords
Israeli Prime Minister Yitzhak Rabin shakes hands with Palestine Liberation Organization chairman Yasser Arafat at the White House after signing the Oslo Accords granting limited Palestinian autonomy.
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1848 - Phineas Gage
Vermont railroad worker Phineas Gage survives an iron rod in diameter being driven through his brain; the reported effects on his behavior and personality stimulate discussion of the nature of the brain and its functions.
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1229 - Ögedei Khan
Ögedei Khan is proclaimed Khagan of the Mongol Empire in Kodoe Aral, Khentii: Mongolia.
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2013 - NASA
NASA confirms that its Voyager 1 probe has become the first manmade object to enter interstellar space.
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1958 - Integrated circuit
Jack Kilby demonstrates the first working integrated circuit while working at Texas Instruments.
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1683 - Battle of Vienna
Austro-Ottoman War: Battle of Vienna: Several European armies join forces to defeat the Ottoman Empire.
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2001 - World Trade Center (1973–2001)
Nineteen members of al-Qaeda execute the September 11 attacks, a series of coordinated terrorist attacks that killed 2,977 people using four hijacked aircraft. Two aircraft crash into the World Trade Center in New York City, a third crashes into The Pentagon in Arlington County,
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1565 - Great Siege of Malta
Ottoman forces retreat from Malta ending the Great Siege of Malta.
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1297 - Battle of Stirling Bridge
Battle of Stirling Bridge: Scots jointly led by William Wallace and Andrew Moray defeat the English.