Wal Thornhill: An Examination of “Gravitational Waves”


But as Newton’s law of gravity demands and simple observation confirms, time isn’t involved. For example, if gravity traveled at the slow speed of light the Earth would be pulled to where the Sun appears in the sky and not the Sun’s real position in space, this would result in a slingshot effect and toss planets out of the solar system in short order. Observations of close binary stars where the effect would be extreme and quickly noticeable, show that gravity must operate at the speed in excess of 20 billion times the speed of light to prevent spiraling orbits.


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