On the heels of the Oscars, we dive into three films that take us to other worlds: A planetary scientist compares Arrakis from 'Dune' to real planets and analyzes whether life could exist on such a sandy, scorching-hot world. And, in a new documentary, NASA psychologists try to find solutions for the mental health challenges of a three-year trip to Mars. Finally, in the movie “65,” an alien crashes on Earth during the Jurassic era, shocked to discover dinosaurs. An astrobiologist has questions.