I enjoyed the plot overall. It seemed realistic for the situation, wasn't overtly preachy on anything and had some crazy moments. The hardest part watching it was around how they depicted the space experience. The way the astronauts 'floated around' was very distracting for me. So much so that it definitely caused my review to drop a couple stars. The other aspects were just weird character moves and missed opportunities for some action. The floating was obviously done in a green screen harness and was just silly. I almost wished they would have just made up some gravity as a convenience instead of trying to make it seem like space floating. The other aspects were around the characters and how they responded. While I called it realistic, the characters behaved oddly in some of the interactions, felt like it was against the grain of their character at times. Maybe they tried to tackle too much, but for some reason this movie didn't really resonate with me and I would not recommend it to my friends. It was not horrible by any stretch and had good aspects, but it was just not that fun to watch.
