2023 - SpaceX's Starship rocket, the largest and most powerful rocket ever built, launches for the first time. It explodes 4 minutes into flight.

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2021 – State of Minnesota v. Derek Michael Chauvin: Derek Chauvin is found guilty of all charges in the murder of George Floyd by the Fourth Judicial District Court of Minnesota.

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2020 – For the first time in history, oil prices drop below zero, an effect of the 2020 Russia-Saudi Arabia oil price war.

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2015 – Ten people are killed in a bomb attack on a convoy carrying food supplies to a United Nations compound in Garowe in the Somali region of Puntland.

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2013 – A 6.6-magnitude earthquake strikes Lushan County, Ya'an, in China's Sichuan province, killing more than 150 people and injuring thousands.

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2012 – One hundred twenty-seven people are killed when a plane crashes in a residential area near the Benazir Bhutto International Airport near Islamabad, Pakistan.

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2010 – The Deepwater Horizon drilling rig explodes in the Gulf of Mexico, killing eleven workers and beginning an oil spill that would last six months.

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2008 – Danica Patrick wins the Indy Japan 300 becoming the first female driver in history to win an Indy car race.

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2007 – Johnson Space Center shooting: William Phillips barricades himself with a handgun in NASA's Johnson Space Center in Houston, Texas before killing a male hostage and himself.

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1999 – Columbine High School massacre: Eric Harris and Dylan Klebold kill 13 people and injure 24 others before committing suicide at Columbine High School in Columbine, Colorado.

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1998 – Air France Flight 422 crashes after taking off from El Dorado International Airport in Bogotá, Colombia, killing all 53 people on board.

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1972 – Apollo program: Apollo 16 lunar module, commanded by John Young and piloted by Charles Duke, lands on the moon.

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1968 – South African Airways Flight 228 crashes near the Hosea Kutako International Airport in South West Africa (now Namibia), killing 123 people.

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1968 – English politician Enoch Powell makes his controversial "Rivers of Blood" speech.

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1961 – Cold War: Failure of the Bay of Pigs Invasion of US-backed Cuban exiles against Cuba.

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1946 – The League of Nations officially dissolves, giving most of its power to the United Nations.

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1945 – Twenty Jewish children used in medical experiments at Neuengamme are killed in the basement of the Bullenhuser Damm school.

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1945 – World War II: Führerbunker: On his 56th birthday Adolf Hitler makes his last trip to the surface to award Iron Crosses to boy soldiers of the Hitler Youth.

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1945 – World War II: U.S. troops capture Leipzig, Germany, only to later cede the city to the Soviet Union.

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1922 – The Soviet government creates South Ossetian Autonomous Oblast within Georgian SSR.

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1918 – Manfred von Richthofen, a.k.a. The Red Baron, shoots down his 79th and 80th victims, his final victories before his death the following day.

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1914 – Nineteen men, women, and children participating in a strike are killed in the Ludlow Massacre during the Colorado Coalfield War.

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1908 – Opening day of competition in the New South Wales Rugby League.

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1902 – Pierre and Marie Curie refine radium chloride.

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1898 – U.S. President William McKinley signs a joint resolution to Congress for declaration of war against Spain, beginning the Spanish–American War.

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1884 – Pope Leo XIII publishes the encyclical Humanum genus, condemning Freemasonry.

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1876 – The April Uprising begins. Its suppression shocks European opinion, and Bulgarian independence becomes a condition for ending the Russo-Turkish War.

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1865 – Astronomer Angelo Secchi demonstrates the Secchi disk, which measures water clarity, aboard Pope Pius IX's yacht, the L'Immaculata Concezion.

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1862 – Louis Pasteur and Claude Bernard complete the experiment disproving the theory of spontaneous generation.

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1861 – Thaddeus S. C. Lowe, attempting to display the value of balloons, makes record journey, flying 900 miles from Cincinnati to South Carolina.

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1861 – American Civil War: Robert E. Lee resigns his commission in the United States Army in order to command the forces of the state of Virginia.

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1836 – U.S. Congress passes an act creating the Wisconsin Territory.

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1828 – René Caillié becomes the second non-Muslim to enter Timbuktu, following Major Gordon Laing. He would also be the first to return alive.

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1809 – Two Austrian army corps in Bavaria are defeated by a First French Empire army led by Napoleon at the Battle of Abensberg on the second day of a four-day campaign that ended in a French victory.

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1800 – The Septinsular Republic is established.

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1792 – France declares war against the "King of Hungary and Bohemia", the beginning of the French Revolutionary Wars.

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1789 – George Washington arrives at Grays Ferry, Philadelphia, while en route to Manhattan for his inauguration.

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1775 – American Revolutionary War: The Siege of Boston begins, following the battles at Lexington and Concord.

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1770 – The Georgian king, Erekle II, abandoned by his Russian ally Count Totleben, wins a victory over Ottoman forces at Aspindza.

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1752 – Start of Konbaung–Hanthawaddy War, a new phase in the Burmese Civil War (1740–57).

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1657 – Freedom of religion is granted to the Jews of New Amsterdam (later New York City).

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1657 – English Admiral Robert Blake destroys a Spanish silver fleet, under heavy fire from the shore, at the Battle of Santa Cruz de Tenerife.

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1653 – Oliver Cromwell dissolves England's Rump Parliament.

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1303 – The Sapienza University of Rome is instituted by a bull of Pope Boniface VIII.

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