As always, Brian Clegg demonstrates a superbly researched love of his subject; all with enthusiasm, and an easy command of the English language. The result is a book that anyone can read (and should) without having to perform weighty mental contortions - Clegg has already done the 'heavy lifting'. This is a book about ideas, but to his credit Mr. Clegg manages to cover the most popular theories in a fast paced, lively and clear fashion all while handling some really difficult ideas. Don't let the subject matter scare you - this is for the general reader.
The real beauty of this book is that it explores what we really know about things that are taken for granted in most science writing: Black holes; wormholes; dark matter; dark energy - so much of the physics underlying these has a degree of speculation that is usually glossed over, yet Clegg explains it here so that it may be understood without having to have a PhD in Physics and/or Maths or both!