Nice post. I am not a physicist so my question may be a bit flawed, and I hope that you (or someone in the community who is familiar with the topic) can help explain this problem which is troubling me: if gravity travels at the speed of light it would take about 8.3 minutes for the sun's gravity to affect earth ... "Gravity must act instantly for the planets to orbit the Sun in a stable fashion. If the Earth were attracted to where the Sun appears in the sky, it would be orbiting a largely empty space because the Sun moves on in the 8.3 minutes it takes for sunlight to reach the Earth. If gravity operated at the speed of light all planets would experience a torque that would sling them out of the solar system in a few thousand years. " (from: http://www.holoscience.com/wp/electric-gravity-in-an-electric-universe/).