No pleasing some people.

The last moon mission was Apollo 17, in 1972. Gene Cernan commanded a team that flew nearly a quarter of a million miles to the moon, and then back again. One sliver of moon rock brought back on Apollo 17 is on display in the Space Center, available to touch, worn smooth and slippery by the millions of fingertips that couldn't resist the opportunity to make sensual contact with a piece of the earth's younger sister.

As I wait my turn and add my fingerprints, I hear an American women complain: "I was expecting something bigger. You know, like a big lump."