Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Black Holes and gravity.

  1. Mar 4, 2006 #1
    Einstein’s relativity states that gravity propagates at the speed of light.
    How can a black hole have a gravitational field when gravity propagates at the speed of light?
  2. jcsd
  3. Mar 4, 2006 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

  4. Mar 4, 2006 #3
    Wow! thanks for the insight and reference, and wonderful quotes.
    I thought it was of particular interest that the phrase "Once formed, they and their gravity just are." was used. ???
    No gravitons would be available, if gravity was not a force; but the effect was from another (non-force) cause.
    thanks again
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Black Holes and gravity.
  1. Black Hole (Replies: 3)

  2. On Black Holes (Replies: 0)

  3. Black holes (Replies: 17)

  4. Black Holes (Replies: 13)