Hi, I understand that according to general relativity the time dilation experienced due to gravity gets more significant the more you go down in a gravitational well, so the maximum should be at the center of the mass. But I can't really rhyme that idea with the idea that the time dilation has to do with being present in a non-inertial reference frame. In the center of the earth, gravity should not cause any acceleration because of equal mass-distributions in all directions. Without acceleration, is there really an accelerated reference frame? If not, why does gravitational time dilation still happen there then? And if gravitational time dilation is caused more by a combination of the space-curvatures of all the mass in the universe, shouldn't the dilation be much higher then? If you stand on the surface then gravitational 'forces' of all the mass pulling you to to your left should cancel out with the force of all the mass pulling you to the right. But the time dilation wouldn't cancel out, so dilation should change differently than the force experienced, right? What am I missing here?