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A science fiction novel by Andy Weir framed as the journal of Mark Watney as he attempts to survive alone on Mars after being abandoned there in an emergency. In 2015 it was adapted into a film starring Matt Damon.

20 votes
4 answers
9k views

Why didn't Hermes drop the supply probe on Mars?

Why didn't the Hermes just drop the resupply payload (after taking out what they needed to survive, of course) onto Mars somewhere near the Ares III site? This would've been safer for Watney and would …
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  • 758
2 votes

How can Watney get so much hydrogen in the air?

Just because the hydrogen has the capability to combust, does not mean it will do so without provocation. Hydrogen needs a spark or an open flame to be ignited, unless it reaches 500 C, which, as Wa …
Benjamin's user avatar
  • 758