Inventions, firsts, and turning points tied to today’s date — each one sourced and dated.
A Soviet probe touched down intact on the Ocean of Storms and beamed home the first photographs ever taken from another world's surface.
A chartered light plane went down in an Iowa snowstorm, killing three young rock and roll stars and reshaping the music's mythology.
The Mainz goldsmith who fitted Europe with movable type died in 1468, having quietly set in motion the age of mass communication.