All the astronauts who flew are great men. My favorite, Apollo and of all time is John Young. John, earned a degree from GT in aeronautical engineering, and went to a surface ship in the Navy. Only then did he learn to fly and become a pilot and test pilot. His determination and intelligence propelled him to apply for astronaut status. Having flown on every maned craft NASA built except Mercury, he became the senior astronaut of the second group. Leading the way to the moon and being the first to fly the Apollo alone, John has accounted for six launches from earth and one from the moon.
I believe his most magnificent moment was the test flight of STS-1 with Crippen. This flight, which scared the hell out of me as an observer kicked open the door to true space exploration and ISS. If he had not taken that darn roast beef sandwich up on Gemini, which took him outof the normal rotation for over a year, he may well have had 7 earth launches!!
After the Challanger disaster, he was openly critical of the NASA upper management, which again, put him at odds with NASA. True to his beliefs, he stayed the course with NASA, taking the position as astronaut admin. His entire career is open for review, and he has always been available for interview. We need many more like John W. Young.