From Number One bestselling picture book duo, David Walliams and Tony Ross, comes this explosively funny space adventure for children of 3 and up. (This ebook is optimised for Kindle tablets and the Kindle App. It is not suitable for e-Ink kindle devices, such as the PaperWhite. We recommend you download a sample to your device before purchase if in doubt.) Two big hippos. One ENORMOUS dream. Who can make it to the moon first? 3 . . . 2 . . . 1 . . . BLAST OFF! Introducing a wonderfully charming and funny new picture book from two superstars!