Gravitation :

1. Introduction 2. From the exciting development about gravitation3. The thesis of this work 4. The method of arguments and comments 5. What is Mass? How it is measured? 6. Model presentation of the "thrust" from the exchange of momentum between radiation and matter. 7. The basic idea of the gravitational model based on cosmic rays and their attenuation during penetration two masses in the same cosmic environment 8. Two masses in the same cosmic environment 9. Calculation of how two masses are pushed towards each other by cosmic rays 10. Thrust between two adjacent masses made of different materials or with different densities 11. Comparison regarding the influence of the distance between gravitational masses 12. Attraction between two masses within each other 13.Open questions of Newtonian theory becam calculable with the present ray theory 14. Comparison of the Gravitational radiation with the gamma rays of different radioactive sources 15. Further considerations and applications based on the cosmic rays 16. Discussion of the results and examples for the application of the radiation theory 17. Conclusions