Hello every one, This might sound as much stupid as it is confusing for me. Suppose the sun vanished right now (that would not happen practically, but I'm not concerned with that), then it will not be less than approximately a little more than eight minutes for us to know that the sun has gone out, since at that time the earth would be in the elsewhere position in the light cone graph. But since there is no mass in the focus of the earth's orbit, the gravity of sun ceases. This should affect the earth, and the earth should fly off, owing to it's orbital velocity, which was when the sun was existing. But my question is, which will happen first? I mean, as soon as the sun vanishes, would the earth experience the absence (in terms of gravity), or will that even take eight minutes? Because gravitational waves travel at the speed of light.