Mission to Mars: Six explorers lived in this simulated Mars habitat in Hawaii for four months, part of a NASA study to test the role of cooking and food on an extended space mission. Sian Proctor/NASA HI-SEAS hide caption itoggle caption Sian Proctor/NASA HI-SEAS The Salt Eating On Mars? Be Sure To Pack The Tortillas August 16, 2013 It's not the hard work that will make astronauts lose it on long planetary missions — it's boredom. And something that can become very boring very fast is a rote menu. A simulated Mars mission reveals why cooking for others will be vital on long space journeys, and why wraps rule.