clipka wrote:
> Quite mind-bogglingly unlike for intelligent life to "wake up" just at 
> such a time when it does.
> 
> (BTW, are you sure it will not? After all, not only does the lunar orbit 
> around earth change, but also earth's orbit around the sun. Maybe the 
> two effects will happen to cancel out?)

I think the eccentricity of the Earth's orbit changes over time, not 
it's distance. I.e. the Earth's orbit continually oscillates over time 
between a more circular and highly elliptical shape. At those times 
where the Earth's orbit is highly elliptical, the sun's apparent 
diameter might vary noticeably *within a single year* as the seasons change.

-Mike

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