Quote:
Originally Posted by renormalised
Any change in the gravitational field between the Sun and the planets takes time to propagate, and does so at the speed of light. However, the waveform, once it comes into existence, is always present at every point in space....whether it's close by the Sun or out in the outer solar system. So, whilst it may take a change in the gravitational field time to propagate, the field itself is always present, everywhere, and that's why we feel its effects.
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The way you describe it is more or less the way I see the push "field" system.. but being external enables an overall force say in the case of a galaxy being (I believe) held together by an external force. Each part propogates at C but being extenal has an overall effect..if that makes sence..and it may not I accept that..but my point is I sorttat see it the way you suggest,
alex