Stink Solar System Superhero by Megan McDonald illustrated by Peter H. Reynolds*

My eight year old read this book to himself.  He is enjoying this series.  He laughs out loud as he reads it.  This is his review:
"The class 2B is having a debate if Pluto is a planet or not.  Riley Rottenberger went to space camp and acts like a "know it all".  Stink does not like her!"
*Highly recommend.
-Borrowed from the library.