What titles truly deserve recognition among the best sci fi books of the 21st century? From groundbreaking space operas and thought-provoking dystopian stories to novels exploring artificial intelligence, climate change, and future societies, modern science fiction has produced many influential works. Which books have had the greatest impact on readers and the genre, and which recent releases stand alongside contemporary classics? Share your recommendations, rankings, and opinions on the most memorable sci-fi novels of this century.