James Irwin

James Benson Irwin was an American astronaut, aeronautical engineer, test pilot, and a United States Air Force pilot. He served as Apollo Lunar Module pilot for Apollo 15, the fourth human lunar landing. He was the eighth person to walk on the Moon and the first, and youngest, of those astronauts to die.

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James Irwin was the first moonwalking astronauts to die when he suffered a heart attack at age 61 in 1991. He always believed that his heart disorder was related with his flight to the moon. NASA didn't substantiate Irwin's claim because he was the only astronaut to develop the problem