In a foreword, an author usually elucidates the aim of his book and describes an idealized reader to whom it is addressed. The first task - the formulation of t

Cosmology deals with the current state of thinking about the basic questions at the center of the field of cosmology. More emphasis than usual is put on the con

This work provides the current theory and observations behind the cosmological phenomenon of dark energy. The approach is comprehensive with rigorous mathematic