Franklin Chang Díaz, Costa Rican-Chinese American astronaut and physicist

Franklin Chang-Díaz

Costa Rican-American astronaut and entrepreneur (born 1950)

Franklin Ramon Chang-Díaz is a Costa Rican-American mechanical engineer, physicist, and former NASA astronaut. He is the sole founder and CEO of Ad Astra Rocket Company as well as a member of the Cummins' board of directors. He became an American citizen in 1977.