Have you ever heard of the "Mercury 13" women? Did you know that nearly twenty years before the first women were let into NASA's astronaut program, there were others who tried? What are the requirements for being shot into space, piloting a hunk of metal while carrying the hopes and fears of your nation? Mastery of flying, as well as courage, intelligence, resistance to stress, and fitness - any checklist would certainly include these. But when America created NASA in 1958, there was an unspoken rule in place: astronauts must be male and white.