(Reuters) - U.S. astronaut Neil Armstrong, who took a giant leap for mankind when he became the first person to walk on the moon, has died at the age of 82, his family said on Saturday.

The family said in a statement online that Armstrong died following complications from heart-bypass surgery he underwent earlier this month, just two days after his birthday on August 5.

As commander of the Apollo 11 mission, Armstrong became the first human to set foot on the moon on July 20, 1969. As he stepped on the dusty surface, Armstrong said: "“That's one small step for (a) man, one giant leap for mankind."

Those words endure as one of the best known quotes in the English language.