Edit: Disclaimer, this post contains faulty ideas I'm a 'pedestrian' to physics trying to wrap my mind around various concepts of relativity, and one of those is a visualization of two, say, planets, say each starting at rest. By my understanding, their mass causes space to relatively compact/condense more and more closer to the planet. But of course if they're close enough to each other, they'll begin to accelerate towards each other. My conception of this was that, even though a given planet's gravitational 'field' of compacted spacetime did not cause it to move in any direction, the interaction of the two compacting 'fields' had a compounding effect in each other's (distant) spacetime vicinity, essentially multiplying off each other's manipulation of space such that it causes them to move through the space surrounding them. Or causing the space to flow past them and out from in between them, if it's relative in that way. Is this an accurate conceptualization of General Relativity/spacetime/gravity, and specifically the mechanism by which said two planets would accelerate towards one another through what we'd observe as 'space'? It's a concept I feel very compelled towards, in trying to cultivate my overall understanding of spacetime and such, but I haven't been able to find satisfactory results through searches to quell my curiosity.