Finished reading my THIRD book this year!
Leviathan Wakes (The Expanse book 1)
Gorgeous 10th anniversary edition!
Loved the TV show but only now getting around to reading the books.
The authors are very good writers. Reading this right after Andy Weir and John Scalzi is a night-and-day difference. Abraham and Franck (aka "James S. A. Corey") are adults who write like they've thoroughly experienced the real world.
The tight pacing caters to short attention spans (they imposed their own target of ~3k words per chapter) but isn't insultingly dumbed down like a Dan Brown novel (he intentionally writes for a ~6th grade reading level).
The chapter structure alternates between the two main characters' POV, giving us a very rich look inside their very different minds.
These are writers who understand people in a deep way that a lot of (most?) sci-fi nerd authors totally lack. Their characters have depth, grit, imperfections, hard-earned wisdom. Dialog and especially their inner thoughts are spot-on. They're not trying to create characters, they're just letting these "real" people speak and act for themselves.

That being said, since I saw the TV show first, I can't say how disorienting or not it might be for completely noob eyes to take in and keep track of the wide variety of characters. I complained that with "Redshirts", an ensemble cast doesn't work in a novel. You'll have to tell me if this succeeds where "Redshirts" failed.
The sci-fi elements are of course fascinating and so richly detailed and well thought out; everything in this first book is foundational to why the TV series was so successful (btw: this book is roughly the first 1.5 seasons).
I did not expect to be this impressed. Read it.