Inventions, firsts, and turning points tied to today’s date — each one sourced and dated.
A faint bulge on a photographic plate of Pluto turned out to be a moon so large it nearly makes the pair a double planet.
When Cleveland's polluted Cuyahoga River caught fire in 1969, the spectacle of burning water helped ignite America's modern environmental movement.
On June 22, 1941, Hitler broke his pact with Stalin and sent millions of troops east in the largest land invasion ever attempted.
On June 22, 1633, Galileo was forced to kneel and renounce the idea that Earth moves around the Sun, then sentenced to house arrest.
Threatened by the Inquisition, the aging astronomer knelt and swore that the Earth stood still at the center of the universe.
