 People are calling this book a return to the classic hard sci-fi, and they're right. It's, it's refreshing. I listened to the audiobook version on a long drive and I enjoyed it from beginning to end. I gotta tell you, the first two sentences of the prologue made me wonder, honestly, do I want to listen to the rest of this? But by the end of the prologue, I was hooked. No question. It has a wide sweeping scope to it, and it has a feel of realism about it, even though it is fiction. Thinking back on it, I do feel that there were too many miraculous escapes, and the whole thing wrapped up a little too nicely. Almost a happy ending, but those are minor complaints. I recommend the book.