This is a trilogy, written by Cixin Liu, an author “beloved” by Chinese readers. I found it seriously nerdy at times (well, I am a technopeasant). Did me good to exercise a few brain cells. Reminded me of Isaac Asimov due to the affection and depth of the way this author dealt with sensitive human problems. Hint: space is much more dangerous than you thought. Must admit I have been smitten. Caution: Do not read these books in the wrong order!