[mlo]

"Gravity, though not waves in gravity, is faster than light. A device that detects the gravity of the sun will indicate a location in the sky where the sun actually is, rather than where it appears to be, which would not be the case if solar gravity were no speedier than the light coming from the sun."

Gravity isn't instantaneous either.

[aruanan]

Gravity isn't instantaneous either.

No, but some 25 times the speed of light is pretty stinking fast. For practical purposes, as far as satellites and space flight is concerned, though, gravity is treated as instantaneous.