I loved this book. I enjoyed Ed Regis’s writing style: clear, conversational and blunt. Regis does not hide his feelings when he discusses what are to him, ill-considered ideas. I found the writing clever and honest, with all the science (or lack thereof) well-explained. And exceptionally for me, I loved the excellent, balanced discussion of ethics and the philosophical aspects of interstellar travel. In addition, I am a big fan of science fiction, and as I read the book, I kept in mind all the genre shows and books I watched and read, making the book more personal to me. Thank you to Netgalley and Cambridge University Press for the advance reader copy.