Find out about the planets in our solar system and beyond. How do we find them? What is a dwarf planet? It's all in here! Then read a story about a journey to a distant moon - and the strange events that unfold there...This book is part of Thunderbolts a series of 24 levelled reading books covering popular non-fiction topics. The 24 low level full-colour titles offer progression over four levels and have particular appeal to older readers. Each book features a non-fiction section together with a fully illustrated fiction story on the same topic.