Looks like "no" but a few years ago they launched / tested the "deep space atomic clock" which seems like it'll be the basis for future space-based clocks. htt

Looks like "no" but a few years ago they launched / tested the "deep space atomic clock" which seems like it'll be the basis for future space-based clocks. https://en.wikipedia.org/wiki/Deep_Space_Atomic_Clock https://en.wikipedia.org/wiki/Deep_Space_Atomic_Clock