sentences:  As a recognized expert in the field of carbonate rocks, Jules Duchesne was chosen by the NASA to study lunar samples collected by the Apollo 11 and Apollo 12 missions.From 1975, while continuing to write on atomic physics and molecular biophysics, he also broadened his scope, to include medical matters.In 1948 he married Audrey Madeline Cripps (b 1919), who was English.