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A problem of light and matter

  1. Jun 25, 2015 #1
    If there are 2 objects at the distance of 2 light years from each other exerting a pull of gravity on each other and one of them vanishes suddenly would the other feel the force instantly or 2 years later or after more time
  2. jcsd
  3. Jun 25, 2015 #2


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    Staff: Mentor

    When you do a Google search for Speed of Gravity, what do you find? :smile:
  4. Jun 25, 2015 #3
    In fact all fundamental forces travel at the speed of light c,
  5. Jun 26, 2015 #4


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    Staff Emeritus
    Science Advisor

    Just for clarity, changes in fundamental forces travel at c.
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