The First Man on the Moon is no more.

NBC News reports that Neil Armstrong has passed away at the age of 82. As the leader of the Apollo 11 crew, the storied astronaut was the first human being ever to set foot on the moon on July 20, 1969, uttering the now legendary words, "That's one small step for man, one giant leap for mankind."

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After retiring from NASA following his return from the Apollo mission, Armstrong took up teaching at the University of Cincinnati, in addition to pursuing various business endeavors.

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He died just a few weeks after undergoing heart surgery to address a blocked coronary artery; he leaves behind his second wife, Carol Held Knight, whom he wed in 1994. Prior to meeting Knight, Armstrong was wed to Janet Shearon Armstrong for 38 years.

This article originally appeared on Neil Armstrong, First Man on the Moon, Dead at 82: Report