I liked: 
 This is a story about space, science and sexy astronauts. 
 The writing is great, especially how the author captured the deep connection between the MCs. I got swept up and carried away with the story. 
 The MCs. Curt is the confident brash mission commander. Patrick is the brilliant but insecure engineer who is forced to take on the very public role of chief CAPCOM. 
 How the author used portions of an old interview to tell Curt's backstory.