This work examines the hypothesis that dark matter does not exist, reassessing key cosmological observations such as galactic rotation curves, galaxy cluster dynamics, gravitational lensing, and redshift. By emphasizing known physics and local gravitational sources, the study questions the necessity of introducing unseen entities. The paper also explores the scientific-philosophical implications of indefinitely postulating invisible matter versus re-evaluating underlying assumptions. The analysis suggests that many observations can be explained without invoking dark matter, highlighting the importance of critically examining standard cosmological premises.
Akihito Sugawara (Wed,) studied this question.