Mark Kelly

American astronaut and engineer

Mark Kelly (Under CC License)

Mark Edward Kelly is an American astronaut, engineer and U.S. Navy captain. He also is an author, political activist, as well as aerospace executive and consultant. Kelly is the husband of former U.S. Representative Gabrielle Giffords.

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NASA released the results from its Twins study on Thursday after studying the changes in astronaut Scott Kellys body while and after he spent 340 days aboard the..
1 week ago • WorldNews
Space travelers in moviesΒ may zip around the universe with no ill effects, but in reality we have no idea how humans will react to being in outer space for..
Credit: - Published 1 week ago

Studies of twin astronauts Scott and Mark Kelly, one in space and one on the ground, finds no major obstacles to long-term space missions
Credit: CBS News - Published 1 week ago

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