On those trips, astronauts practiced using their geological hammers, hand lenses and maps to identify telltale crystals in rocks. Most important, ...

Charles Darwin encountered a tiny fox-like creature during his famous voyage but instead of discovering its fascinating evolutionary story, he just knocked it on the head with his geology hammer ...

We had a geological hammer. The following masterpiece, now on Google Street View, was the result. ''I know I mostly post serious stuff on here, but this was simply too funny to not share.'' ...