I am sure all who have read the book feel they fully missed it with this movie. It simply is not possible to tell the story in 2 hours without cutting so much out that it can't create the back stories, emotions and the how and why. Best way to get this story is by audio book (from audible) and you after each hour will notice how making it a 10 part netflix series would have worked so much better. There are many natural cliffhangers, emotional ups and downs and moments that would have you think how would you react as the main person, the human population or the different people at nasa/gpl. I am sure many of the people involved in this movie also miss what they liked about the book and is totally missing from the movie because of the huge missing parts that result in things becoming random and happening for no clear reasons.