Childhood cancer survivor details upcoming space mission

Hayley Arceneaux, a 29-year-old cancer survivor and physician assistant at St. Jude Children's Research Hospital, got an out-of-the-blue question from her employer: Would she like to go to space? She talks with CNN's Anderson Cooper about what it means to participate in such a historic mission. Watch "Full Circle" every Monday, Tuesday and Friday at 6pm E.T.

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