@nasaastronauts Charlie Duke, of Apollo 16, was the first astronaut I met in 1995 as I was finishing high school. Afterward, I wrote him a letter as an aspiring astronaut, and he took the time to reply. I’ve cherished this letter since, and flew it with me to @iss. A few weeks ago I had the honor of sharing this history with Charlie and his family (& Ken Mattingly’s) as well as showing them around my old home on the @iss (@nasajohnson ISS mock-up) and our future ride back to the Moon in the @nasaartemis#orioncapsule!