Mark Kelly (born 1964) is an American astronaut.

The cause was pancreatic cancer, said Mark Kelly, a spokesman for the university.

Mark Kelly has logged over 38 days in space.

Mark Kelly was denied the sale of an AR-15 rifle.

Statement from Mark Kelly 1/10/2011, Kelly's first public statement after the shooting of his wife.

Mark Kelly served as the mission commander.

Kelly's identical twin brother, Mark Kelly, is also an astronaut.

Mark Kelly's sister Leanne died from cervical cancer last year, less than five months after she had been diagnosed.

Mark Kelly is about to command the space shuttle Endeavour's final flight.

Mark Kelly flew Discovery to a point above the station before performing the final separation burn.

Mark Kelly (born 1964) is an American astronaut.

The cause was pancreatic cancer, said Mark Kelly, a spokesman for the university.

Mark Kelly has logged over 38 days in space.

Mark Kelly was denied the sale of an AR-15 rifle.

Statement from Mark Kelly 1/10/2011, Kelly's first public statement after the shooting of his wife.

Mark Kelly served as the mission commander.

Kelly's identical twin brother, Mark Kelly, is also an astronaut.

Mark Kelly's sister Leanne died from cervical cancer last year, less than five months after she had been diagnosed.

Mark Kelly is about to command the space shuttle Endeavour's final flight.

Mark Kelly flew Discovery to a point above the station before performing the final separation burn.