I realized I went a bit too far in not trying to spoil anything, that so far there has been no basic description of what "The Martian" is, or isn't.
It is not about aliens or monsters.
It is not about using some future "technobabble" technology magic.
It is a realistic story that uses the same technology as exists today, but more advanced as it would be a few decades into the future.
It IS about a future mission of humans from Earth to Mars (Sadly, that is the most outrageous fictional part of the book….. that we'd actually DO it, and actually plan to do many of them).
The story is about the third mission, which was getting about the same attention on Earth as the 3rd planned lunar landing on the Moon (Apollo 13, which was being mostly ignored until, you know).
Mission 3 lands safely on Mars, the crew sets up camp, begins exploring, and so on. Routine.
A few days later... a natural event happens… a severe one…. leading to a disaster.
I've not spoiled earlier chapters of the book, because the book starts off after the disaster has occurred, and the above is described early in chapter 1, beginning with the 9th paragraph.
There are many clever moments in the book. Even at least a couple of "OMG" moments. Many many problems to be solved, or else. Also many setbacks. Also, some old tech. And some very VERY old tech.
Here's a link that has the first chapter, and the first 8 paragraphs of chapter 1 are pasted below:
https://www.space.com/24721-chapter-one-of-the-martian.html
- George Gassaway
"Chapter 1: Log Entry SOL 6
I'm pretty much f*****.
That's my considered opinion.
F*****.
Six days into what should be the greatest two months of my life, and it's turned into a nightmare.
I don't even know who'll read this. I guess someone will find it eventually. Maybe a hundred years from now.
For the record . . . I didn't die on Sol 6. Certainly the rest of the crew thought I did, and I can't blame them. Maybe there'll be a day of national mourning for me, and my Wikipedia page will say, "Mark Watney is the only human being to have died on Mars."
And it'll be right, probably. 'Cause I'll surely die here. Just not on Sol 6 when everyone thinks I did.
Let's see . . . where do I begin?"