Hi Dr. Jin He,
I agree with you that the study of galaxies can give us clues to "life, the universe and everything," as Douglas Adams put it. I do not mind that the essay appears off-topic because it helps me in my own research, and that is the greatest benefit of the essay contest for me. I have some questions for you:
1. Does your theory work with irregular galaxies... which many assume are intermediate states of the merger or close contact of two galaxies?
2. Does your theory help explain the unexpected structural simplicity of galaxies that Disney et. al. reported?
3. Do you think it is possible that when we look at a galaxy we are seeing a three dimensional projection of a hyperspherical surface?
This is the picture I am led to in my work, described in Software Cosmos.
Hugh