The metaphysical astronauts

When Edgar Mitchell died last week, the flurry of obituaries that followed each noted his impressive career as an astronaut; specifically, that he was the sixth person to walk on the Moon. Much further down, they might also mention that Mitchell had an epiphany in deep space, and, finally, go on to describe some of the out-there ideas that he developed in the 45 years between that epiphany and his death.