Book excerpt: Our Solar System is massive! It is hard for us to even imagine its size. Collect lots of interesting facts as you travel through and explore planets, comets, and asteroids in this fascinating book. Our Solar System is from Fluent Reader Level 4 and is ideal for more fluent readers aged from 7+ who are starting to read independently. Each book has been carefully checked by educational and subject consultants and includes comprehension puzzles, book band information, and tips for helping children with their reading. With five levels to take children from first phonics to fluent reading and a wide range of different stories and topics for every interest, Read It Yourself helps children build their confidence and begin reading for pleasure.