"Dubbed the Mercury 13, these fearless pilots had all the qualifications and experience to be able to compete with — and in some cases, outperform — their male counterparts. They were simply the wrong gender."
Frankly, that's a crock of ****. Yes, these women passed many of the same medical tests that the Mercury candidates underwent (though only one, Jerrie Cobb, passed all three phases of the medical tests) but there was a lot more to the qualifications for the early astronauts than being able to physically survive the expected rigors of space flight. One key qualification that NONE of them had was experience as a test pilot in high performance jet aircraft. (Cobb, arguably the most experienced aviator among them, had never even flown a jet.)
Experience handling a novel craft in unexpected circumstances was a legitimate qualification for sending pilots into the unfamiliar environment of space. It was not a matter of sexual discrimination on the part of NASA that there was no way for a woman to BE qualified. Maybe the U.S. military should have allowed women to fly in combat and work as military test pilots in the late '40s and early '50s, so that by 1959 when NASA started assembling its pool of astronaut candidates there might have been some women who were qualified. But to claim that the so-called "Mercury 13" had "all the qualifications and experience" that the Mercury astronauts had is laughably revisionist history.