The New Cosmos.

I Classical Astronomy.- 1. Stars and Men: Observing and Thinking. Historical Introduction to Classical Astronomy.- 2. Celestial Sphere: Astronomical Coordinates: Geographic Latitude and Longitude.- 3. Motion of the Earth: Seasons and the Zodiac: Day, Year and Calendar.- 4. Moon: Lunar and Solar Eclipses.- 5. Planetary System.- 6. Mechanics and Theory of Gravitation.- 7. Physical Constitution of Planets and Satellites.- 8. Comets, Meteors and Meteorites, Interplanetary Dust; Structure and Composition.- Interlude.- 9. Astronomical and Astrophysical Instruments.- II Sun and Stars: Astrophysics of Individual Stars.- 10. Astronomy + Physics = Astrophysics. Historical Introduction.- 11. Radiation Theory.- 12. The Sun.- 13. Apparent Magnitudes and Colour Indices of Stars.- 14. Distances, Absolute Magnitudes and Radii of the Stars.- 15. Classification of Stellar Spectra: Hertzsprung-Russell Diagram and Colour-Magnitude Diagram.- 16. Double Stars and the Masses of the Stars.- 17. Spectra and Atoms: Thermal Excitation and Ionization.- 18. Stellar Atmospheres: Continuous Spectra of the Stars.- 19. Theory of Fraunhofer Lines: Chemical Composition of Stellar Atmospheres.- 20. Motions and Magnetic Fields in the Solar Atmosphere: Solar Cycle.- 21. Variable Stars: Motions and Magnetic Fields in Stars.- III Stellar Systems: Milky Way and Galaxies: Cosmogony and Cosmology.- 22. Advance into the Universe. Historical Introduction to Astronomy in the Twentieth Century.- 23. Constitution and Dynamics of the Galactic System.- 24. Interstellar Matter.- 25. Internal Constitution and Energy Generation of Stars.- 26. Colour-Magnitude Diagrams of Galactic and Globular Clusters Stellar Evolution and Abundances of the Elements.- 27. Galaxies.- 28. Radio Emission from Galaxies: Exploding Galaxies.- 29. Cosmic Rays: High Energy Astronomy.- 30. Cosmology.- 31. Origin of the Solar System: Evolution of the Earth and of Life.- Stellar Populations in the Galaxy.- Physical Constants and Astronomical Quantities.- Figures: Acknowledgments.