A lot more like The Martian (but w/ less poop) than like his second book. I enjoyed all the little science-y problems and seeing how they got solved. Would love to read an explainer about how was based on literal facts and not just extrapolations. And in a book that is all dedicated to the sciencey science stuff, it seems weird that there are a few areas where the narrator is just incurious. Don’t want to give away a bunch of spoilers but it was an odd aspect of this. The last part of the book gets a little bogged down in “Oh no YET ANOTHER wrench thrown into this that we have to science our way out of” but overall I enjoyed reading it.