I would agree that it is interesting. Personally I don't think it represents UFOs as we think of them though but more likely religious symbolism. There is no way to no for sure.
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I would agree that it is interesting. Personally I don't think it represents UFOs as we think of them though but more likely religious symbolism. There is no way to no for sure.
Some of them are quite controversial, please check also the NASA pdf for more detailed info