This 29-year-old cancer survivor is set to be the youngest American ever in space

Hayley 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 on Inspiration 4, the first spaceflight to take a group composed entirely of civilians — not professional astronauts — on a multi-day journey to orbit the Earth. It's slated to take off in October 2021. Arceneaux will be joined by billionaire and Shift4 Payments CEO Jared Isaacman, who is funding the mission and plans to use the event to raise more than $200 million for St. Jude's research.