NASA introduced the four astronauts scheduled to fly on next year's Artemis III mission. (From left to right) NASA commander Randy Bresnik, European Space Agency pilot Luca Parmitano, NASA mission specialists Frank Rubio and Andre Douglas at a press conference announcing the crew at NASA's Johnson Space Center in Houston, Texas, on Tuesday.

Ronaldo Schemidt/AFP via Getty Images

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Ronaldo Schemidt/AFP via Getty Images