February 17

Philosopher and astronomer Giordano Bruno is burned at the stake in Rome for heresy, partly for supporting the Copernican view that the Earth orbits the Sun.

Bruno, a former Dominican friar and philosopher, was condemned by the Roman Inquisition for a range of heretical beliefs, including his defense of Copernican astronomy and speculation about an infinite universe with multiple worlds. His execution made him a lasting symbol of the conflict between scientific inquiry and religious orthodoxy.

After a tied Electoral College vote, the U.S. House of Representatives elects Thomas Jefferson president over Aaron Burr.

The tied 1800 election between Jefferson and his own running mate, Aaron Burr, exposed a flaw in the original Constitution's electoral process, resolved only after 36 rounds of voting in the House. The crisis directly led to the Twelfth Amendment, which separated the voting for president and vice president.

A committee is founded in Geneva that would become the International Committee of the Red Cross, dedicated to protecting victims of armed conflict.

The Geneva committee, founded by Swiss businessman Henry Dunant after witnessing the horrific aftermath of the Battle of Solferino, established principles for neutral humanitarian aid to wounded soldiers regardless of allegiance. It grew into the International Committee of the Red Cross, a cornerstone of modern international humanitarian law.

The Confederate submarine H. L. Hunley sinks the USS Housatonic, the first successful submarine attack on an enemy warship in history, though the Hunley itself was lost soon after.

The Hunley, a hand-cranked Confederate submarine, successfully sank the Union blockade ship Housatonic using a spar torpedo, but the primitive vessel and its crew of eight also sank shortly afterward for reasons still debated by historians. The wreck was located and raised over a century later.

Union troops burn much of Columbia, South Carolina, during General Sherman's campaign through the state.

Union General William Sherman's troops occupied and burned much of South Carolina's capital during his devastating March through the South, though responsibility for the fires, whether deliberate Union action, retreating Confederates, or accident, remains disputed by historians to this day.

Grand Duke Sergei Alexandrovich, uncle of the Russian tsar, is assassinated by a revolutionary bomber in Moscow.

Grand Duke Sergei, the tsar's uncle and a widely unpopular figure known for his harsh policies as Moscow's governor-general, was killed by a bomb thrown by a revolutionary as part of the broader unrest of the 1905 Russian Revolution.

Chaim Weizmann is sworn in as the first President of the newly established State of Israel.

Weizmann, a chemist and longtime Zionist leader who had lobbied for decades for a Jewish homeland, became the first president of Israel in a largely ceremonial role, with executive power resting with the prime minister, following the country's declaration of independence the previous year.

The NEAR Shoemaker spacecraft launches on the first mission designed to orbit and eventually land on an asteroid.

NEAR Shoemaker's launch began a mission that would make it the first spacecraft to orbit and, in a bonus unplanned maneuver, land on an asteroid, providing scientists with unprecedented close-up data about the composition and structure of these small rocky bodies.

Kosovo declares independence from Serbia, a move recognized by many Western nations but disputed by Serbia and Russia.

Kosovo's declaration followed years of conflict and international administration after NATO intervention ended a brutal Serbian crackdown on ethnic Albanians in the late 1990s. Its independence remains disputed by Serbia, Russia, and several other countries, leaving its international status unresolved.

Anti-government protests erupt in Libya against Muammar Gaddafi's regime, part of the wider Arab Spring uprisings sweeping the region.

Protests against Muammar Gaddafi's four-decade rule broke out in Benghazi and quickly spread, met with a violent government crackdown that triggered a civil war and eventual NATO intervention. Gaddafi was killed by rebel forces later that year, though Libya's subsequent political fragmentation has continued for years.