A Goodreads user
A Goodreads user asked Andy Weir:

First of all, I'd like to take this opportunity to congratulate you on the book, it's been a long time since I've enjoyed a book so much. It seems to me that you have a lot of knowledge about planning and executing space exploration missions, so I'd like to know how much of your story is based on actual missions that NASA is planning for sending men to Mars?

Andy Weir Not much. The mission profile is based largely on Zubrin's "Mars Direct", with my own modifications to take advantage of more modern technology.
Andy Weir
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