How cool - asking the question "does gravity propagate at the speed of light and if so what impact does that have on orbital dynamics" was the event that led me

How cool - asking the question "does gravity propagate at the speed of light and if so what impact does that have on orbital dynamics" was the event that led me down the path to my PhD, so it's awesome the answer to the question is now (or soon to be?) baked into a science toy.