Was it ever specifically mentioned in the book that he grew out a beard when he left for Ares IV?
2 Answers
It doesn't look like it. The only mention I see relating to facial hair is in chapter 9:
I’ve fallen in to a routine. Every morning I wake up at dawn. First thing I do is check oxygen and CO2 levels. Then I eat a breakfast pack and drink a cup of water. After that, I brush my teeth, using as little water as possible, and shave with an electric razor.
So he can shave, if he wants to do so. Other than this I can't find any other reference to beards.
(NASA used to have wind-up (spring operated) electric-style razors at one time. They were wind-up to eliminate electrical interference.)
It wasn't specifically mentioned ... but of course he did. He was a space pirate!! He also brought with him to Schiaparelli a sharpened piece of MDV strut to use as a cutlass! Yo ho ho!
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The only illegal thing he does is boarding Ares 4. He's not a pirate on Schiaparelli, just a sailor with bad intentions. Commented Jan 29, 2016 at 1:03
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2Please allow yourself a sense of humor, like Mark has: he calls himself a "space pirate". (Both in the book and the movie.)– davidbakCommented Jan 29, 2016 at 2:01