Stephen Hawking’s Universe: Strange Stuff Explained. Concise elegant refrresher course on the concepts with which Hawking challenged us in A Brief History of Time. Partial contents:

Antimatter,

The Big Bang,

Black Holes,

Cosmic Background Radiation,

Dark Matter,

Imaginary Time,

Quarks,

Quasars,

Singularity,

Superstrings,

The Uncertainty Principle, Wormholes, etc. And, for more, the current issue of Discover has a primer on the efforts to study anisotropy in the Cosmic Microwave Background radiation, currently considered our best approach to unravelling ultimate cosmological mysteries.