1.I would recommend this book for middle elementary school students.
2.This book explains each planet in our galaxy as well as the sun and the stars as well. It does a great job of explaining what each planet would be like if we lived on it. As well as what stars are and how they die.
3.I would love to have this book in my classroom. The only iffy thing is that this book was published in 1986. So the data might be a little outdated.