  Half a century after a man first set foot on the moon it is interesting to
revisit the occasion with a measure of hindsight. From the point of view of
basic science the greatest achievement concerned the implementation of the
Nordtvedt test, a precise check of Einstein's strong equivalence principle. A
particle physicist may bravely interpret the result as a precise measurement of
the triple-graviton coupling. Other not so profound experiments were also
(unofficially) made in Apollo flights, such as a long-distance test of ESP
(yes! extra sensory perception). From a sociopolitical point of view the lesson
concerns the feats that can be achieved by a determined and united country...
or more than one.
