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The consensus on Space Exploration.SE where this same question was asked is... NO Answer by Mark Adler Well, developing low-thrust trajectories does take more computation than impulsive trajectories (e.g. like Voyager, which was done with rather primitive computers). You have no choice but to run many fully integrated trajectories. However it would ...


12

Saving water He has limited supplies of water. Of course he hasn't showered in his entire 561-Sol stay - it's possible (and in Mark's case necessary) to maintain hygiene while spending much, much less water than a shower does.


9

The current (and longstanding) recommended calorie intake for an active male adult is about 2,500 kcal However, it is possible to survive extended periods on much less - at a cost. A 25% reduction in daily calories can cause about a 0.5kg to 1kg a week reduction in body mass. I can't remember if it's explicitly stated in the movie how much he is short on ...


8

Mark has to move to the Schiaparelli Crater because it is the landing site of the next planned mission to Mars, and it has the required rocket vehicle to get him into orbit to be rescued. The rocket is placed there by Nasa in advance of the next mission. He gets there in a modified rover vehicle. He modifies it primarily to make it able to travel further ...


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