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Comment by tanbog5 | Hacker News Reader

Are relativity effects significant on the moon? I thought a rationale for this was the need to account for relativistic effects making clocks run at slightly different speeds on the moon than on the surface of the earth.

Is the "timezone" more of conversation protocol for earth time to moon time?

Current missions use a synchronised mission clock and don't last long enough for this to be a big issue right?

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> Are relativity effects significant on the moon?

Yes, as the article states, clocks run faster on the Moon. About 56 microseconds per day.

Be that as it may, as far as I know, Newtonian gravity was sufficient for the moon landings. So I'm guessing this is more of a coordination issue between countries than a necessity for trajectories or such.

Forgive me my ignorance but does that mean that you age at a different speed at the moon compared to earth ?

Exactly. Look up the twin‘s paradox - https://en.m.wikipedia.org/wiki/Twin_paradox

You age at the same speed. Stuff that is far away from you may age more or less rapidly, but that effect only exists at the point where some kind of communication travels between you and the faraway stuff.

I've heard that due to time dilation time runs slower inside the Earth's core, enough to make it a couple of years younger than its surface.

Technically yes - but the difference amounts to 2 seconds per century. Your lunar clone would be younger than you, but the difference would be less time than you spent calculating the difference.

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