Related video above: NASA releases new video from Perseverance roverHayley Arceneaux, a 29-year-old cancer survivor and physician assistant at St. Jude children’s hospital, got an out-of-the-blue question from her employer last month: Would she like to go to space?”I remember laughing,” Arceneaux told CNN Business. “And then, I just said — ‘Yes! Yes, like, put my name down.'”Arceneaux will be one of four crew members