This was very interesting. I knew very little about dwarf planets, only that Pluto was downgraded from planet to dwarf planet. I heard about Ceres but knew little about it. Now I learned there are five dwarf planets in the Kieper Belt. There are also more in other solar systems. I liked how comparisons were made so I could understand the size. I especially liked the charts given on how long a day lasts or a year. The orbit map fascinated me. I tried to follow each orbit. The planets closest to the sun were hard to follow because they were so close to one another, and I kept losing track of the planet only to find I was in a different planets orbit. I wish the orbits would have been different colors so it would have been easier to see, but I understand why only two colors were used. I learned a whole lot in a simplistic format perfect for introducing me to dwarf planets. I can now study other books on it for more information. ( )