How did they land on the moon, how did they came back to earth? What was the engineering behind this marvelous trip to moon?
Have a look at http://en.wikipedia.org/wiki/Apollo_11
or this
http://www.lpi.usra.edu/lunar/missions/apollo/apollo_11/
Have a look at http://en.wikipedia.org/wiki/Apollo_11
or this
http://www.lpi.usra.edu/lunar/missions/apollo/apollo_11/