Does gravity have a finite speed at which it effects an object. For example (and this is strictly hypothetical) if a new star were to suddenly appear near the orbit of Saturn would Earth instantly notice the influence or would it take a few minutes? When I think of Newtonian gravity I would just assume it travels at c so we would notice the gravitational effects the same time we saw the light from that star. But with relativity I'm really just not sure because I don't know if the bending of spacetime has any speed limit. I hope I'm making myself clear here.(adsbygoogle = window.adsbygoogle || []).push({});

Also: If gravity does travel at c is that only in a vacuum?

(Also an explanation of the graviton and what that means for the idea of spacetime would be appreciated)

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# Is there a speed of gravity?

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