When I was watching The Martian I really couldn't make a clue of this thing. And sadly all in the film that was stated about it (at least in the language version I watched) was, because they thought it would be a nice idea to drill a hole in his roof. But that's all and there was nothing else stated after that about it anymore.
Here is a picture of the thingy I'm talking about:
So earlier problems that had not been mentioned how to be solved:
- The temperature
- He had at that time the radioactive module in the rover "spending heat" but I had the impression it could still get dangerously cold at night. So does this thing have any purpose of regulating temperature?
- Generating oxygen
- He has an oxygen generator but earlier it was mentioned that he will have trouble with the length of the journey as the oxygen won't last long enough, what let me assume no way to generate it on the rover. As after it no word was dropped how they solved this problem: Does this thing maybe some how support the regeneration of oxygen?
Or is it just solving a problem I didn't even notice coming up? I dare to doubt they didn't do it just because they thought it would be fancy.
If this isn't somehow on topic here, please be so kind to migrate it to movies SE.
But I assumed even it is based on a film this is probably better fitting here.