Pope Innocent III, siding with King John, condemned the charter as 'illegal, unjust, harmful to royal rights and shameful to the English people,' voiding the landmark agreement barely a month after it was sealed at Runnymede. The annulment triggered the First Barons' War, though Magna Carta's principles would be revived and reissued repeatedly in the following decades, cementing its legacy.

Kneeling before Inquisition officials in Rome, the 69-year-old astronomer recanted his defense of Copernican heliocentrism, declaring he abjured, cursed, and detested his previous errors. He was sentenced to house arrest for the remainder of his life, but his condemned work, Dialogue Concerning the Two Chief World Systems, continued circulating and shaping scientific thought across Europe.

Before 70,000 fans at Yankee Stadium, heavyweight champion Joe Louis avenged his only professional loss by knocking out Germany's Max Schmeling in the first round. The fight, broadcast to millions and heavily politicized as a contest between American democracy and Nazi ideology, became one of the most celebrated sporting moments of the 20th century.

At 3:15 AM, German forces smashed across the Soviet border in three massive army groups, catching Stalin's forces unprepared despite repeated warnings. The invasion opened the Eastern Front, which would become the bloodiest theater of the Second World War, ultimately consuming millions of lives and turning the tide against Hitler's ambitions.

Built at a cost exceeding $8 billion after years of engineering battles with permafrost, earthquakes, and migrating caribou herds, the pipeline began pumping oil south from the Arctic fields at Prudhoe Bay. It became one of the largest privately funded construction projects in history and a crucial artery for U.S. domestic oil supply for decades.

Working at the U.S. Naval Observatory in Flagstaff, Arizona, astronomer James Christy noticed an odd elongation in images of Pluto and identified it as a previously unknown moon. Named Charon after the ferryman of Greek mythology who carried souls across the river Styx, the discovery revealed that Pluto was smaller than previously calculated and allowed astronomers to finally determine its mass accurately.

In the second round of Poland's parliamentary elections, Solidarity candidates won nearly every contested seat, a stunning repudiation of four decades of communist governance. The result, negotiated through the Round Table Talks earlier that year, opened the door to the peaceful collapse of communism across Eastern Europe.