First I would like to preface this with the fact that I watched this movie solely because Christian Kane is in it, but I went in with an open mind and no expectations.
Christian, of course, was excellent in the role of Boudreux, Grady's handy but mostly quiet best friend. Though the part was small Christian easily conveyed the intensity and dedication of the character in his relationship with Grady.
Clayne Crawford turned in a remarkable performance as Grady Lee Jr. Quiet, withdrawn, quite possibly a bit autistic, and utterly brilliant. This is a very different type if role for Crawford, and to say he nailed it is an understatement.
The true standout of this film is certainly Colt Crawford, son of Clayne, making his acting debut as Grady's nephew Kai. The characters of Grady and Kai are so intricately interwoven that they are nearly the same character in many ways. I'm sure that their real life relationship made it less difficult, the performance was so seamless that it is a true testament to Colt's natural acting talent.
The story itself I found to be an easily digestible level of an extremely complex concept. While it is true that there are in-depth questions that I would've enjoyed seeing explained, I believe that Sonny & Tom made the right choice in keeping the overall story a bit more simplified thus making the film enjoyable for the whole family. Each character has their own journey to travel, and they have the chance to get where they're going by the end of the film. I was also impressed by the film's ability to deal with conflicting subjects and ideals; science, science fiction, agnostic, Christian all without belittling the value of each.
Overall this is a solid film that I believe would be an enjoyable watch for virtually everyone.