If you are interested in cosmology and would go further than the enigmatic phrases that can be found in the science magazines, I recommend this highly educational and beautifully illustrated book. The feat of Jean-Pierre Luminet is to clearly explain the close links that now mathematics (especially the topology) and the physics of the cosmos. The section on different cosmological models and the impact of various constants on the shape and evolution of the cosmos is very useful for understanding the current experiments.
