
Fuente: Ali Sundermier, 27 de Septiembre, 2016, "Elon Musk: To join SpaceX's first mission to Mars, you have to be 'prepared to die" http://www.businessinsider.com/elon-musk-spacex-mars-colonization-death-prepared-to-die-2016-9, Businessinsider. Consultado el 08 de Enero, 2018.