And probably at least semi realistic? Didn't like it as much as Project Hail Mary by the same author. This sorta read as a sequence of "oh crap, another thing went wrong" problems, followed by solutions. I'm certain this is realistic - or even still overly optimistic, given what they were surviving through - but kinda made for an overly long, repetitive narrative. I suspect this is part of why they cut some of these out of the movie (and to save time, but also it got repetitive). Nevertheless, a fun read if you enjoy sci-fi that sticks close to contemporary science.