I have a question about this known hypothetical situation. Einstein asserts that once the sun vanishes we would still receive light for 8 min. Then at almost/same time when the sky goes dark, the gravitational wave hits earth and we would fall out of the earlier orbit around the sun. Some questions about the situation above. Have any experiments of this type been done? Confirming that a smaller object would not move, until the light from the bigger object had dissapeared? And would it be possible that once the sun disappeared the Earth could move, even though the gravitational wave did not reach the Earth?