NASA seeks new astronauts until April 2, slim chances for selection. 

U.S. citizenship, master’s degree required; diversity emphasized. 

Glover, first Black astronaut on ISS, Artemis II. 

Glover’s humorous approach to application and emphasis on social skills. 

Diversity efforts in NASA’s astronaut corps. 

Elon Musk criticizes diversity initiatives. 

Challenges and sacrifices of Mars mission considered. 

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