May 18, 1048: Omar Khayyam, poet and mathematician. Persian poet, mathematician and astronomer Omar Khayyam was born on this day in 1048 in Nishapur, in today's Iran. He helped make a very accurate calendar and solved hard equations using geometry. His short poems, the Rubaiyat, have been translated into many languages.
1953 π§ Pilot Jacqueline Cochran flew faster than the speed of sound, becoming the first woman ever to break the sound barrier.
1969 π Apollo 10 launched as a full dress rehearsal for landing on the Moon; its lunar module was nicknamed Snoopy and the command module Charlie Brown. Kennedy Space Center β
2005 π Pictures from the Hubble Space Telescope confirmed that Pluto has two more small moons, which were later named Nix and Hydra.