Started reading this last night. I'm only two chapters in but it is very well-written. I'm not the most scientifically literate when it comes to the hard sciences but the first two chapters do a very good job of breaking down the concept of space and the electromagnetism in an understandable context. I'm excited for the rest of the book.
I read A Brief History of Time which was good but I think this book has more potential for reaching out to the average reader because it is so accessible.