This was a great read! I learned a lot about our Solar System. And I learned why Pluto is no longer considered a planet, which I had never known before. My short explanation, after reading the book, is that when Pluto was discovered, nothing else that far out in the solar system had ever been see...
The title is misleading, Mike Brown didn't end Pluto's reign as a planet....but nevertheless this is an absolutely fascinating book telling what lead to it's downgrading, how planets and other astronomical objects are discovered and registered and named, and the whole thing told with a great deal...