Comment Comment by ck2 I thought they already measured this via satellites and time dilation, GPS in particular has to know exactly how much time is losthttps://en.wikipedia.org/wiki/Frame-dragginghttps://en.wikipedia.org/wiki/Time_dilation parent ck2 5 years ago
https://en.wikipedia.org/wiki/Frame-dragging
https://en.wikipedia.org/wiki/Time_dilation