Interstellar: Christopher Nolan says blockbuster is about 'human feelings' too The acclaimed director said that as his space blockbuster goes further into the vast unknown, the film becomes more concerned with humanity and how we form relationships. "The further out into the infinite we went and the more we isolated these characters who have to go across the universe, the more the focus naturally becomes on their humanity, on that intimate bond they have, what makes us human, all those issues," he said. Review: Interstellar I think there's something about the starkness and the massiveness of the environment that they're in that really reduces this focus very tightly to human bonds and what makes us who we are. The film, which sees a team of astronauts travel beyond the galaxy in a bid to save humanity, also uses minimal CGI. Nolan, whose past films include The Dark Knight and Inception, said he preferred to use old techniques as well as new ones to help "disguise the trickery" involved in making the outer space scenes appear more realistic. We really tried to build on what's been done before but add our own techniques to it. [We used] miniature work, motion control, things like that but then combining them with today's technology, which allows you to composite things in a particular way, use CGI in a particular kind of way to enhance those types of effects," he said. There are quite a few things in the film that haven't been done before and may never be done again, I don't know. Interstellar is released in the UK nationwide on Friday 7 November. Read more: Interstellar review Anne Hathaway thought she'd 'die' filming Interstellar The story behind Nolan's new blockbuster