This book was a fast, fun read. Weir took the phrase 'science the shit out of this' and made a whole book based on that. Here's a science (usually physics) problem that feels very realistic for the problems one would encounter on a space ship. Then in the next paragraph, here is the solution. Also its a nice homage to science teachers. If you liked The Martian, then you'll probably like this one too, but I gave it three stars because the story, the novel itself, is weak. The book uses flashbacks to fill in the backstory of how the book opens, and I didnt feel particularly attached or interested in the characters described there in. The two main characters are what kept it going for me. It has some good humor too. I laughed out loud more than once.