Questions for ‘Preparing for that trip to Mars’

Niki Werkheiser and Quincy Bean, members of NASA’s 3-D printer team, examine parts produced on a prototype of the first 3-D printer to be sent to the International Space Station.
Fred Deaton/NASA
Niki Werkheiser and Quincy Bean, members of NASA’s 3-D printer team, examine parts produced on a prototype of the first 3-D printer to be sent to the International Space Station.
Fred Deaton/NASA