Factual error: in the film Hanna talks about there being 8 planets. the film also suggests that Hanna and her father have been living in the forest for her whole life of 16 years and her only knowledge coming from books. it was 1996 when the government had any traces of Hanna's father, so that makes the film set in 2011/12. so if she has only ever got her information from books published before she was born, she would still think there are 9 planets, because Pluto wasn't officially named a dwarf planet until 2006. (00:16:05)Rachel.