Blob, Blub, and Bleep take an imaginary space voyage to "Plovsnat" in a spaceship made up of chairs and spacesuits made of kitchen utensils and meet and alien creature called a "mummosaurus"
Russell Conwell Hoban was an American expatriate writer. His works span many genres, including fantasy, science fiction, mainstream fiction, magical realism, poetry, and children's books. He lived in London, England, from 1969 until his death. (Wikipedia)
I remember liking this story growing up so I was happy to be able to read it to my niece this Christmas. It was surprisingly hard to read with all it's nonsense words and phrases from the three children. But my niece seemed to enjoy it. We'll see if she asks for alit again.