I have yet to see a group of three or more women get along for more than a day and a half here on earth, I can't begin to imagine the cat fights and venom that would result by putting an entirely female crew in a stressful situation like a six month spaceflight.Future crews should be women only with semen samples in the test tubes being part of a payload. However, nobody knows whether a spaceship crew comprising several amazons will be able to maintain peace for a long time.