This is a very interesting channel, and it approaches lots of my questions, thank you!

It’s a bit of a nitpick, but I’m not sure I’d use “flow” here. That makes it sound like it’s moving, while the Schwarzchild solution is actually static with respect to a properly chosen time coordinate (and without checking, probably the spinning and charged solutions as well). The spacetime is curved in such a way all timelike (c or slower) trajectories go inwards.

Oh that makes sense. I though it was space time itself which was moving, bringing with it the objects on it. (probably had seen some illustration representing it like that)

But yes the gravitational waves take is interesting, it burn my mind trying to imagine how to “trap” spacetime in itself.

It’s being like you