Inventions, firsts, and turning points tied to today’s date — each one sourced and dated.
Launched in 1977 to tour Jupiter and Saturn, Voyager 1 just kept going until it slipped out of the Sun's bubble entirely.
A penny paper announced bat-winged people and unicorns on the Moon, and a startling number of readers simply believed it.
On a Venice bell tower, Galileo handed the city's rulers a spyglass that turned distant ships into close neighbors.
