Just what you expect a mix of science in spots with going along the story plot. This book is funny in spots. One thing though first half is slightly slower than would of thought. Other if want a good chunk of science like the Martian you won’t. And unlike the Martian this book is YA. But overall a cool book and I’d suggest to all readers minus young one’s since a few curses in it ect ect. But between the Martian and this book I like both for what they were, I could follow this book better and more stuff going on since more area’s where forget the guys name but guy on mars is trying to survive.