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That's one of the interesting things Einstein thought about. Newton said that gravity acted instantaneously, but after Einstein realized that nothing could go faster than light, he knew that was wrong. Imagine that the sun suddenly disappears. If both Newton and Einstein were right, the Earth would fly off out of the solar system before the sun stopped shinning! That would be scary. So it was then that Einstein knew gravity did not effect objects instantaneously.

Nothing, and I mean NOTHING, can travel faster than the speed of light.

Gravity is the universe's weakest force, but on scales as large as planetary diameters, it can appear as quite strong!

Gravity doesn't shift from 'knowing' to 'unknowing',...

gravity isn't a sentient force.

It just 'is'.

Thank You For Your Time.

Have A Nice Day.

Science still hasn't determined what the speed of gravity could be. At this time there's no reason to think that the speed of gravity is instantaneous. Most agree that it is probably the same as the speed of light. This is one reason so much effort is being put in to detecting gravity waves.

Gravity doesn't travel anywhere. It just is where it is. And I would love to hear how you determined that gravity acts instantly. It appears to act as fast as light travels and that appears to be instantly.

The effects of gravity are not instantaneous. They propagate at the speed of light.

It is due to action at a distanceand the effect of gravity does not travel with velocity of light or any other velocity.

in the general relativity model, gravity propagates at the speed of light. in the newtonian model gravity is described as infinite.