#### JesseM

Science Advisor

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Let's put it this way: if you are inside an expanding light sphere, you can never outrun the light and escape the sphere, regardless of what coordinate system is used. Your own coordinate speed may be greater than the coordinate speed of light at some position, though (for example, in Schwarzschild coordinates the speed of light approaches zero at the event horizon, so observers far away from the horizon can certainly travel with a greater coordinate speed than light close to it).I have it now.

You cannot travel faster than the speed of light in this "coordinate system".