I'm reading HOW I KILLED PLUTO AND WHY IT HAD IT COMING by Mike Brown
I'm enjoying it very much. I LOVE science, especially physics, specifically astrophysics and astronomy, so I knew I had to pick up this book when it was released (which was 2 weeks ago). When I brought it home, Sammy looked at the cover and asked "Why is that rocket bullet dying that dot?" Such a simple question with a very complicated answer.
Sammy used to have planets hanging above his bed, so I used those to explain why Pluto (which he used to pronounce Mooto when he was younger) was a small planet and couldn't be a BIG planet anymore. Of course there were many more factors that contributed to the definitions of planets and dwarf plants, but he's only 3. When I put Sammy's question on twitter, Mike Brown, the author, replied with "the dot had to die."
I'm half way through (page 135)...I think Eris (the 10th "planet") is about to be discovered, which sends Pluto on the path to it's eventual doom. I've found this book to be very engaging. It includes aspects of the author's personal and professional life and explains the science behind astronomy in a way that a person of average intelligence can understand it.
I've checked this out of the library, but I can tell it's going to be a book I'm going to buy.