Article explores the concept of dark matter, a postulate introduced to explain observed anomalies in the motion of cosmic objects, such as stars at the outskirts of galaxies and galaxies within clusters, that do not align with Newton's law of universal gravitation. Traditional gravitational theory, as well as Einstein's Theory of General Relativity, faces challenges in accounting for these discrepancies, including the Pioneer anomaly, the anomalous flyby effect, the behavior of Oumuamua, and the trajectory of asteroid Apophis. This paper posits that these anomalies can be explained by revising the law of universal gravitation itself, rather than introducing the concept of dark matter. By examining instances where the gravitational constant appears variable and the function of distance in gravitational equations deviates from expected values, the paper suggests an alternative approach to understanding cosmic phenomena. The implications of these findings on celestial navigation, the behavior of light in gravitational fields, and the structure of the universe are discussed, challenging prevailing theories and proposing a new direction for gravitational research.