Things space contract and time dilate in SR. And also things space contract and time dilate near heavy objects in GR, right? Particles are accelerated towards heavy objects in GR. My question is does the the acceleration due to gravity produce a frame of reference equal to some speed which would produce the same space contraction and time dilation in SR? The difference would be that the contraction in SR would only be in one direction whereas the contraction in GR would be in all directions. But in GR it would not matter in which direction you approached the point near the heavy object. However you got to the point near the mass, you still end up in an accelerated frame while traveling in that direction so that all directions are contracted in GR. If space contraction due to gravitation corresponds to a space contraction of speed, then what speed does a gravitational acceleration correspond to? And what is being accelerated, some kind of hypothetical test particle, or maybe light itself, or maybe space itself?