On this day in history

472: Besieged in Rome by his own generals, Western Roman Emperor Anthemius is captured in St. Peter's Basilica and put to death.
813: Emperor Michael I, under threat by conspiracies, abdicates in favor of his general Leo the Armenian, and becomes a monk.
1533: Pope Clement VII excommunicates England's King Henry VIII.
1576: Martin Frobisher sights Greenland.
1616: Samuel de Champlain returns to Quebec.
1735: Mathematical calculations suggest that it is on this day that dwarf planet Pluto moved inside the orbit of Neptune for the last time before 1979.
1750: Halifax, Nova Scotia is almost completely destroyed by fire.
1796: The United States takes possession of Detroit from Great Britain under terms of the Jay Treaty.
1798: The United States Marine Corps is re-established. It had been disbanded after the American Revolutionary War.
1804: A duel occurs in which the Vice President of the United States Aaron Burr mortally wounds former Secretary of the Treasury Alexander Hamilton.
1864: Confederate forces attempt to invade Washington, D.C. during the Battle of Fort Stevens in the American Civil War.
1889: Tijuana, Mexico, is founded.
1893: The first cultured pearl is obtained by Kokichi Mikimoto.
1895: Brothers Auguste and Louis Lumière demonstrate movie film technology to scientists.
1914: Babe Ruth makes his debut in Major League Baseball.
1921: Former President of the United States William Howard Taft is sworn in as 10th Chief Justice of the U.S. Supreme Court, becoming the only person ever to hold both offices.
1922: The Hollywood Bowl opens.
1943: German and Italian troops launch a counter-attack on Allied forces in Sicily.
1960: To Kill a Mockingbird by Harper Lee is first published.
1962: First transatlantic satellite television transmission.
1972: The first game of the World Chess Championship 1972 between challenger Bobby Fischer and defending champion Boris Spassky starts.
1990: The Oka Crisis, a First Nations land dispute in Quebec, begins.
2008: Apple released the iPhone 3G.