Leroy Chiao is an American astronaut and engineer who was born on January 6, 1960. He flew on four space missions, including missions to the International Space Station (ISS) and the Space Shuttle. Chiao has a background in mechanical engineering and earned a doctorate in the field from the University of California, Santa Barbara. In addition to his work as an astronaut, Chiao has served as a mission controller and has been involved in various educational and outreach programs. He is also known for his public speaking and has shared his experiences in space with audiences around the world.