From: Mike Lorrey (mlorrey@datamann.com)
Date: Sat Apr 13 2002 - 10:12:37 MDT
spike66 wrote:
>
> Mike Lorrey wrote:
>
> >I find this rather interesting because a year or so ago I recall working
> >outside one day with a cloudless sky when a rather large shadow passed
> >through the valley and over me. Looking up I saw no aircraft or clouds
> >anywhere near the sun at all, which I though was rather strange. Could
> >this shadow have been from an NEA eclipse?
> >
> No. If a shadow passed over you, then the object would have had
> to be large enough to eclipse a large part of the sun. Recall that the
> sun is half a degree or close enough to a hundredth of a radian. If
> you saw nothing, no contrail, it would need to be well outside of the
> atmosphere, perhaps a good 200 km up, in which case it would need
> to be 2 km across. Anything that big would set off radar all over the
> globe.
>
> When you were working outside, could it be you were working
> close to the ground, having had no food for some time and stood
> up suddenly, causing your eyes to do something funny? Ive done
> that.
No, I was fine, and the shadow wasn't everywhere, just about 1/4 mile
across or less, and it wasn't centered on my irises, it passed through
the valley rather quickly and was dark in the center and fuzzier at the
edge.
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