Doubts About the Expansion of the Universe Derived from Einstein's Field Equations

According to Newton's universal gravitation, it can be known that the gravitational force between two planets is inversely proportional to the square of the distance. When the distance is large, the gravitational force between the two planets will become very small. At this time, it can be considered that the two planets are no longer affected by each other's gravity. Einstein's general theory of relativity believes that a massive planet can bend the space-time around it, and the degree of curvature decreases with distance. When the distance is large, the degree of the planet's curvature of its space-time will also become very small, or even negligible. For a large galaxy or galaxy cluster, there are many planets in it. Their gravitational pull on the edge planets of the galaxy or galaxy cluster varies with the distance. For most planets, because the distance is quite far, it has no impact on the edge planets of the galaxy or galaxy cluster. It can also be said that most of the stars in the galaxy or galaxy cluster Numerous planets have no impact on the space-time where the edge planets are located. Only a few planets that are close to the edge planets of the galaxy or galaxy cluster will have an impact on it. Therefore, we cannot equate the distribution of all the planets in the galaxy or galaxy cluster to the center of the galaxy or galaxy cluster to analyze its impact on the edge planets of the galaxy or galaxy cluster. For the entire universe, we are currently unable to determine whether its size is finite or infinite. Even if we regard it as a finite sphere, we cannot equate the planets in the entire universe to the center of the universe to analyze its impact on the edge planets (space-time) of the universe. Moreover, the edge planets of the universe move as a whole together with the equivalent planets in the center of the universe. Therefore, the results of the expansion of the universe cannot be derived from Einstein's field equations. We know that the field equations of Einstein's general theory of relativity evolved from the bending of space-time around massive stars. This article believes that the field equations of Einstein's general theory of relativity are only suitable for the calculation of the bending of the surrounding space-time by specific stars. They are not applicable to the calculation of the impact of galaxies or galaxy clusters on the surrounding space-time, let alone the calculation of the evolution of the entire universe. Observations by the Webb Telescope have shown that the characteristics of galaxies in the early universe are surprisingly similar to those of recent galaxies, indicating that there is no expansion process in the universe.