From my perspective it’s the best book about astronomy from physics point of view.
This publication is a comprehensive introduction to classical astronomy as well as modern astrophysics and cosmology. The book presents the most important astronomical concepts as well as the underlying physical principles. In addition to theoretical considerations, the reader will find in it tasks with solutions and tables containing the most important, collective data in the field of astronomy and physics.
The authors of the book are famous Finnish astronomers, university professors, awarded many times by the astronomical community.