I was six when Neal Armstrong became the first man to walk on the moon. I was 10 when Gene Cernan became the last.

Between July 20, 1969, and December 14, 1972, exactly 12 human beings landed and walked on earth’s moon.

The first words said on the moon were from Armstrong when he uttered, “That’s one small step for man, one giant leap for mankind.” Cernan’s parting words were, “We leave as we came, and God willing, as we shall return, ...