"I am, and ever will be, a nerdy engineer," Neil Armstrong once said, trying to downplay any suggestion that he was some sort of modern icon or superman. After making history in 1969 as the first person to walk on the moon, he spent much of the rest of his career out of the limelight and leading a quiet, modest life. But his achievements were never, and will never, be forgotten. On hearing the news of Armstrong's death, President Obama said: "He was a hero not just of his time, but of all time." Click through for snapshots from the life of one of history's most acclaimed yet unassuming pioneers.