Quote:
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Originally Posted by wholloway
I know it seem strange, but think about what would happen if our sun suddenly vanished. If gravity does travel at the speed of light, then we wouldn't loose it's gravitational pull for eight minutes. It's my personal theory that gravity is not a wave, but a displacement of space time. I then thought that if the displacement travels at the speed of light, the moment at which we feel the affects of our vanishing sun there would be more displacment away from the center of the solor system than towards it. In this sense gravity would pull outward until the displacement settled down.
What do you think?
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I think it was from Greene's video on the Elegant Universe. It talks about if the sun vanishes, we would still see it light for another 8 minutes, however at the instant it vanishes, the earth would not be orbiting as it used to do.
