In July 1969, astronaut Neil Armstrong's 'giant leap for mankind' was watched by millions of people around the world.
The BBC's aerospace correspondent at the time, Reg Turnill, reported on the Apollo 11 launch from the Kennedy Space Center in Florida, and later from mission control near Houston.
He is now retired, but here - with the help of archive material from the mission, and the US and UK number one records from that week - he recalls how Nasa rose to the challenge of putting man on the Moon.
Images courtesy Nasa, AP, PA, AFP and Getty Images.
Music by Zager and Evans (US number one at time of moon landing), Fifth Dimension, Thunderclap Newman (UK number one at time of moon landing) and courtesy KPM Music.
Slideshow production by Paul Kerley. Publication date 16 July 2009.
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