Bobby wonders where the bubbles go and Bibble, in Space, wonders where they come from. Bibble goes in search of the origin of the bubbles and also finds himself a new friend. Written by Alice Hemming, this educational Early Reader book is book band Blue (aimed at 5-6 years, Year 1). The colour grading system is recognised by the Institute of Education which reflects the reading difficulty. The book content, language style, phonics and layout are taken into account to determine this.