This book presents a new approach to the subject of cosmology. It fully exploits Einstein's theory of general relativity. It is found that the most general formal expression of the theory replaces the (10-component) tensor formalism with a (16-component) quaternion formalism. This leads to a unified field theory, where one field incorporates gravitation and electromagnetism. The theory predicts an oscillating universe cosmology with a spiral configuration. Dark matter is explained in terms of a sea of particle-antiparticle pairs, each in a particular (derived) ground state. This leads to an explanation for the separation between matter and antimatter in the universe. There is a brief discussion of black holes and pulsars. The final chapter delves into philosophical considerations such as the different types of `truth', positivism versus realism and a discussion of the role of the Mach principle in physics and cosmology.
Physics of the Universe; A Language of Cosmology: The Mathematical Basis of General Relativity; A Unified Field Theory in General Relativity: Extension from the Tensor to the Quaternion Language; An Oscillating, Spiral Universe Cosmology; Dark Matter; Concluding Remarks; Philosophical Considerations.