The Hunt for Planet Nine

Collins Big Cat supports every primary child on their reading journey from phonics to fluency. Top authors and illustrators have created fiction and non-fiction books that children love to read. Book banded for guided and independent reading, there are reading notes in the back, comprehensive teaching and assessment support and ebooks available.

We know a lot about space but what do we not yet know? Scientists have predicted a ninth planet in the solar system but can they prove that it's really out there? Discover more fascinating space mysteries in this information book by Isabel Thomas.


      Lime Plus/Band 11+ books provide challenging plots and vocabulary as well as opportunities to practise inference, prediction and reading stamina.


      Pages 46 and 47 allow children to re-visit the content of the book, supporting comprehension skills, vocabulary development and recall.


      Ideas for reading in the back of the book provide practical support and stimulating activities.