The speed of gravity
I've been wondering - how fast do gravity waves travel?
By that, I mean, if the sun were to vanish somehow instantaneously, it would take us 9 minutes or so to actually notice, since the light waves take 9 minutes to reach us. But what would the gravitational effect be?
Would it take the earth 9 minutes to "break orbit", or would we break free the second the sun vanished?
Ringo
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