They say that someone isn‘t a true expert in something unless they can explain it at a middle school level. NDT Does just that. I have learned so much just from this book and it has made me excited to learn more about astrophysics. I can listen to a news story on the radio about some new discovery in space now and actually keep up and know what they are talking about. It‘s been a long time since I was this excited to learn about science!Good read!