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A comment on Triangle UFO over Shanghai June 22 2021. Parent comment

Re:Triangle UFO over Shanghai June 22 2021 by fwipsy on Tuesday June 22, 2021 @11:58PM (#27600632)
You mean, a shadow cast by a building onto a cloud? That seems like the most plausible explanation, but if that's the case, why isn't it a constant feature, why is it only appearing now? Also, it looks more sharply defined than I would expect if that were the case.
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Re:Triangle UFO over Shanghai June 22 2021 by flukus on Wednesday June 23, 2021 @12:29AM (#27600800)
> why is it only appearing now?

Maybe the clouds have to be just the right height/composition to see the effect. If the clouds were higher it might be too small and diffuse to see, maybe the lower clouds are partially blocking some other light sources making it much more pronounced or something along those lines.

Why did no one break out a high powered laser pointer or range finder?

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Re:Triangle UFO over Shanghai June 22 2021 by King-Aaron on Wednesday June 23, 2021 @12:03AM (#27600663)
I feel that if it was cast from a building, the shadow would be stretched down to the source. However maybe a shadow from some kind of kite?
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