[Southack]

"Clocks do slow down due to gravity, as they also do when accelerated. Yes, this has been measured, and the effect is exactly as predicted by special relativity."

Special Relativity and Gravity...are you certain?

[PatrickHenry]

Special Relativity and Gravity...are you certain?

In this case, yes. Acceleration and gravity have the same effect on clocks. The principle of equivalence. If I'm wrong, I expect that one of the heavyweights will correct me.