What a GREAT book! I was looking for a book for my 3 1/2 year old that would introduce him to space in a simple way, "What's Out There" is exactly what I wanted. He is so captivated by this book, it is short, simple and easy to understand. It is perfect for him now and will be for the next several years. All of the basics are covered such as the 9 planets and their relation to the sun, how the earth travels around the sun and spins, the moon, gravity, the make-up of all the planets, asteroids etc. Each topic is explained in a fun and easy way for a child to understand and the illustrations are wonderful. Highly recommend as a first book about space!