The runtime of this film was justified: it was enough to establish both the scientific and emotional foundation of the story. Jessica Chastain's and Matthew McConaughey's performances were awesome and dramatic as always without overly doing it. The CGI and visual effects were among the bests that I have watched. I just wasn't sure if the movie's scientific basis and references were true and tested but it was interesting and intriguing. The mood of the film was also consistent and dynamic throughout the film: it went from being dramatic and emotional to suspenseful and back to being emotional. I think it was used intelligently and that was what it sets the film apart from other sci-fi films. The twist was also satisfying to watch.