Fe b 20 07 The Faulty Assumptions of the Expanding - Universe Model vs . the Simple and Consistent Principles of a Flat - Universe Model

The standard model of expanding universe is based on the theory of general relativity (GR) which assumes that spacetime is curved. The reason of curved spacetime was given by Einstein that locally there is common acceleration for all test particles so that gravity is cancelled locally. This is called equivalence principle. The present paper shows that it is not true for Schwarzschild solution (static gravity of pure spatial inhomogeneity). The paper also presents isotropic but temporally inho-mogeneous gravity. Freely falling particles do not share common accelerating direction locally which indicates that gravity can not be cancelled too. Realistic gravity is non-static which is the case in between. This indicates that the assumption of curved spacetime is a fundamental mistake. Therefore, a correct gravitational theory or a model of the universe must be based on the absolute flat background spacetime. The existence of such absolute spacetime is shown to be true from the following three basic principles about the universe: (1) the density of large-scale mass distribution of the universe varies with time (corresponding to an isotropic but temporally inhomogeneous gravitational field); (2) the gravity is described by a Lagrangian which is the generalization to the proper distance of special relativity (the metric form of GR); (3) Hubble law is approximately true. These lead to varying light speed and give account of galactic redshifts and 'accelerating expansion ,. Therefore, the assumption of big bang and expansion is incorrect. My model is ready for further test. Physical science describes spatial and temporal relative motions due to physical interactions. People found four fundamental interactions and the gravitational one is believed to be the cause of global structure and evolution of the universe. Gravity is the longest known yet the least understood. In Newtonian theory, gravity is considered a static force, a stereotype of " action-at-a-distance ,, which implies infinite velocity of propagation. One of the fundamental theories discovered in the twentieth century is the theory of special relativity which requires any force be transmitted with velocity less than or equal to c, the light speed. The theory assumes flat background spacetime of Minkowski 1