Mark Kelly Siblings: Getting to Know Scott Kelly

Mark Kelly is a prominent American figure known for his multifaceted career spanning military service, space exploration, and politics.

Born on February 21, 1964, in Orange, New Jersey, he is a retired U.S. Navy captain, former NASA astronaut, and currently serves as the senior United States senator from Arizona.

He is married to former Congresswoman Gabby Giffords, and together they have advocated for issues such as gun violence prevention and space exploration.

Kelly’s life story reflects a commitment to public service, shaped by his upbringing as the son of two retired police officers who emphasized hard work and dedication.

Siblings

Kelly’s most notable family connection is his identical twin brother, Scott Kelly, also born on February 21, 1964.

The brothers grew up together in West Orange, New Jersey, where they attended Mountain High School and learned the value of diligence from their parents, Richard and Patricia Kelly.

Both pursued similar paths in aviation and space, becoming the only siblings to have traveled into orbit.

Scott is a retired NASA astronaut who famously spent a year aboard the International Space Station as part of NASA’s Twins Study, which compared the effects of long-duration spaceflight on Scott in space with Mark on Earth

Career

Kelly’s career began in the U.S. Navy, where he became a naval aviator and flew 39 combat missions during the Persian Gulf War in 1991.

He graduated from the U.S. Navy Test Pilot School and earned advanced degrees, including a master’s in aeronautical engineering.

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In 1996, he was selected as a NASA astronaut in the same class as his twin brother Scott.

Kelly completed four spaceflights: as pilot on STS-108 in 2001 and STS-121 in 2006, and as commander on STS-124 in 2008 and STS-134 in 2011, the latter aboard the space shuttle Endeavour.

These missions contributed to the assembly and maintenance of the International Space Station, including delivering supplies, modules, and conducting scientific experiments.

After retiring from NASA in 2011 to support his wife’s recovery from a 2011 assassination attempt, Kelly co-founded Americans for Responsible Solutions with Gabby Giffords to address gun violence.

He entered politics in 2019, winning a special election to the U.S. Senate in Arizona and securing re-election in 2022, where he continues to serve with a focus on national security, veterans’ issues, and innovation.

Accolades

Kelly has earned significant accolades for his contributions to aviation, space exploration, and public service.

As an astronaut, he logged over 54 days in space across his four missions, helping advance human presence in orbit and scientific research.

He and his brother Scott are celebrated as pioneers, particularly for their role in NASA’s Twins Study, which provided valuable data on spaceflight’s physiological impacts.

Kelly’s military service included combat honors from the Gulf War, and his transition to politics has brought recognition for bipartisan efforts on issues like border security and gun safety.