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sjw40364
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According to GR (General Relativity) space-time curvature causes gravity. Updates to this curvature occur at the speed of c, yet aberration is set to 0, effectively making the propagation speed of gravity instantaneous. In SR (Special Relativity) nothing can exceed c. We know that light takes 8.3 minutes to reach the Earth from the Sun. If gravity or space-time curvature changes took the same amount of time to update, aberration would be induced, effectively doubling the Earth's orbital distance around the Sun in 1200 years. From observation over the last few thousand years we know this has not happened, supporting faster than light propagation speeds for gravity or space-time curvature updates. So if aberration is set to 0 then space-time curvature updates must propagate at faster than c speeds. If space-time curvature updates occur at c or less then aberration must be factored in not set to 0 to make the theories work.