The Universal Gravitational Constant (G) in an Expanding Universe
This paper indicates how the inclusion of dark matter, which is shown in Bye (2021) to have a constant density (ρD) throughout the Universe, together with the velocity of light (c), which is also a constant, leads to the expression, G=[3c2/4πρD]/R2, for the universal gravitational constant in which R is the radius of the Universe. As the Universe ages G decreases.