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How quickly does a change in gravity affect its surrounding?

  1. Aug 21, 2015 #1
    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.
  2. jcsd
  3. Aug 21, 2015 #2
    The rate at which a gravitational force "travels" is the speed of light.
  4. Aug 21, 2015 #3


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    Gold Member

    Yup. Gravitational change propagates at c.
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