Daftar Isi:Part I Facts and Principles 1. Energy Conservation 2. Energy Non-Conservation Means Too Much Freedom 3. The Four Interactions 4. Matter Radiation Particles 5. The dark Night Sky and Olbers Paradox Part II Realtivistic Cosmology 6. General Relativity and Cosmology 7. The Friedmann-Lemaitre Solutions 8. The Role of Radiation Pressure 9. The Einstein-Lemaitre Correspondence Part III More Paradoxes 10. The Accelerating Universe Paradox 11. The Missing and dark Energy Paradoxes 12. The Photon-to-Baryon Paradox Part IV A Contingent Universe 13. The Universe is Finite Open and Contiongent 14. The Very Early Universe Indeterminacy or Uncertainty 15. Singular Moments in Cosmic History 16. A Brief Outline Worl Events and Cosmological Discoveries from-4500 to 2010