Mark Edward Kelly (born February 21, 1964) is an American politician and a retired astronaut and naval officer. He is the senior United States senator from Arizona, a seat he has held since 2020. He is a member of the Democratic Party.
Kelly flew combat missions during the Gulf War as a naval aviator before being selected as a NASA Space Shuttle pilot in 1996. His identical twin brother, Scott Kelly, also became a NASA astronaut that year. Mark flew his first space mission in 2001 as pilot of STS-108, then piloted STS-121 in 2006, and commanded STS-124 in 2008 and STS-134 (the final mission of Space Shuttle Endeavour) in 2011. In January 2011, Kelly's wife, then-Arizona Representative Gabby Giffords, was shot and nearly killed in an assassination attempt in Arizona. Kelly retired from the Navy and NASA that October. In 2013, Kelly and Giffords founded a nonprofit political action committee, Americans for Responsible Solutions (later merged into Giffords), which campaigned for gun cont...
