The next frontier: MARS! Ok, so the moon would probably be good too, but I want to talk about what kind of people NASA would want to send to Mars. In Heinlein's Stranger in a Strange Land, the optimal explorers are four married couples with varied expertise including: an astrogator, medical doctor, cook, machinist, commander, semantician, chemical engineer, electronics engineer, physicist, geologist, biochemist, biologist, nuclear engineer, hydroponicist. Presumably, you would want people that could function without contact from earth in the case of disaster. With space exploration to Mars tantalizingly close, what do you think are the best skills to look for in a Mars crew?