nmspacemuseum.org

6EZ9l TIL Apollo 17 astronaut Harrison Schmitt is the only scientist to have explored the Moon’s surface. Because he was not a pilot, as all previous astronauts were, Dr. Schmitt attended a 53-week course in flight training, logging more than 2,100 hours flying time
GYKG7 TIL Apollo-11 trajectory to the Moon is named "Kondratyuk Route" after a self-educated Ukrainian who had calculated it 50 years before the lunar flight
D1dev TIL when John Glenn became the first man to orbit the Earth in 1962, he carried a note that read "I am a stranger. I come in peace. Take me to your leader and there will be a massive reward for you in eternity" translated into several languages, in case he splashed down in the remote South Pacific