I have been studying gravity for a while on an under graduate level. I have an equation that was derived that uses the speed of light to calculate the gravitational force between two objects. No G needed. Do any of you know of any like equations available that I could compare it with or study? I know, why not show the equation... well honestly, I do not want to appear an idiot before I do necessary research so any guidance would be appreciated. The only variables are the two masses, distance between them to calculate the force, plus the speed of light and a use of the area of space. (no made up numbers). Thanks for the guidance.