Very good movie. Unlike a lot of sci-fi movies that rely on special effects to create an interesting story, this relies instead of real science. The writing reminded me of Carl Sagan's Contact, which was also made into a movie starring Jodie Foster. This movie covers so much with so little. Entire movie takes place in one night, with just 3 main characters. Good insight into life of real astronomers and the struggles that they go through. Technical and scientific details are presented in an easy-to-understand format. I would recommend this for anyone with interest in astronomy and sci-fiction.