|
![](/i/fill.gif) |
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
Post a reply to this message
|
![](/i/fill.gif) |