The Martian.
Honestly have been reading this since January this year, and halfway through the book I got stuck on a chapter chock full of scientific/technical stuff. I haven’t watched the movie yet, and for this book, I look up anything that’s unknown to me for a better picture (MAV, chemical processes, etc). I also get more out of reading this during +1hr sessions. OK I promise I will finish the book this year. Great book though… gets the gears turning and is hilarious at times!