Planet Earth is surrounded by huge, dark space. Discover the wonders of space, from the Sun, moon and stars to space travel. Discover the facts and Share the learning in these fun books. A series of differentiated text books on topics that children really want to read about. The lower level text is ideal for emerging readers and the higher level text will suit more able readers. The large, square format encourages sharing, and spectacular photos are featured on every page. Perfect for readers aged 4 and up.