Reading this because we recently streamed the BBC series.
This is an excellent book. It‘s got interesting technology, good world building, a collection of characters that you care about, and some mysteries that keep you reading to the end. (And when you get there you want to start the next instalment straight away, except it hasn‘t been written yet. Hopefully David Grigg is not the new George Martin.)
“The fallen sun” is well worth reading, particularly if you like science-based science fiction.