Biographies of Private Astronauts


Christopher Steven


Chris Sembroski

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Personal data

Birthdate:  28.08.1979
Birthplace:  Kannapolis, North Carolina
Marital status:  married
Children:  two
Selected by:  SpaceX
Status:  Ret. 18.09.2021


No. Mission Position Time Duration
1  Inspiration4  Private Astronaut  16.09. - 18.09.2021 2d 23h 03m 
Total  2d 23h 03m 
Patch Inspiration4            

Additional information

Chris Sembroski grew up with a natural curiosity about outer space. Stargazing late at night on the roof of his high school and launching high-powered model rockets in college cemented this passion. As a U.S. Space Camp counselor, he conducted simulated space shuttle missions and supported STEM-based education designed to inspire young minds to explore these areas and find their passions. As a college student, Sembroski volunteered with ProSpace, a grassroots lobbying effort that promoted legislation in Washington, D.C., to help open space travel and allow companies like SpaceX to exist. He then served in the U.S. Air Force, maintaining a fleet of Minuteman III intercontinental ballistic missiles and deploying for service in Iraq before leaving active duty in 2007. Following his education from the Air Force, Sembroski earned a B.S. in Professional Aeronautics from Embry-Riddle Aeronautical University. In his career, Sembroski has sought innovative, industry-disrupting methods to monitor and maintain mechanical equipment, making everything from data centers to hospitals more efficient. He now resides in Seattle, WA, and works in the aerospace industry.


Last update on July 12, 2022.