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Thanks for the link. Unbelievable, isn’t it?

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https://www.youtube.com/watch?v=FiuvL9ADToo

I saw the crescent things in the early 90’s and found it very curious, but there was no internet then.

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https://www.youtube.com/watch?v=FiuvL9ADToo

I saw the crescent things in the early 90’s and found it very curious, but there was no internet then.
Sorry if this is a double post.
Nonetheless, here’s another for inquiring minds:

https://www.youtube.com/watch?v=vyAh9OENJPU