How quickly does a change in gravity affect its surrounding?

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SUMMARY

The discussion centers on the propagation speed of gravitational changes, specifically whether a change in gravity affects surrounding objects instantaneously. Participants confirm that gravitational changes propagate at the speed of light (c), meaning that any alteration in gravitational force does not occur instantaneously. This establishes that information cannot be transported faster than the speed of light through changes in gravity.

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Fowler
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If the gravity of an object changes ( due to it's energy changing into mass ) how quickly does a second object get affected by this change in gravity? Is it instantaneous?
If so then could information be transported faster than the speed of light using changes in gravity?

Of course I can't see how this would be possible, but can somebody please explain where I've went wrong. Thanks.
 
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The rate at which a gravitational force "travels" is the speed of light.
 
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Yup. Gravitational change propagates at c.
 
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