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What causes the short term variation in the length of a march-equinox year

Maybe this is only a partial answer, but the post was getting too long as it anyway. I’ve since realised that there are major pitfalls to my method of trying to interpret peaking frequencies in the ...
anonymous's user avatar
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Is the Moon really oscillating around its orbit as seen from Earth?

This is a perspective effect. We are on a revolving planet, so as the planet rotates, the moon will appear to move slightly with respect to the distant stars. You can see that if you place yourself ...
James K's user avatar
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