Recently finished the book The Martian by Andy Weir. Which inspired this comic. Do yourself a favor and read it.
I wrote a review about this over at my blog. It’s very rare that I get this enthusiastic about a book like this. It’s really that good.
Also people who know of Andy Weir’s previous work there’s some not so hidden references to his earlier work.
Once long ago I did a guest comic for him. 10 years ago my art was not that great.