Just kidding, of course. There is a whole school of UFO buffs who claim to have found depictions of UFOs in religious paintings. They are actually iconographic interpretations of religious concepts that were common at the time, or taken out of context by cropping. There is a website by an art historian with an in-depth examination and debunking of the UFO claims (unfortunately, not all the pages have been translated from Italian, but some are. It’s a pretty interesting site:
sprezzatura.it/Arte/Arte_UFO_eng.htm). There is also a good book on the subject, “Out of Place in Time and Space” by Lamont Wood that examines these and other supposed anomalies.
The last picture
is kind of puzzling, however. It is a 1460 painting by an unknown local artist of Mary and the Christ child with St. Benedict, in the Musee de Tesse in Le Mans, France. Jesus is shown holding what seems to be a pull-string toy helicopter, long before any such toys were known or before Leonardo da Vinci sketched the idea of a helicopter (Leonardo was 8 years old when the painting was made). It may be a whirligig, or pinwheel, that was sometimes included in religious paintings as a way to introduce another cross motif. This painting is evidence that some toy-maker realized you could power a pinwheel not only with the wind, but also by a pull-string that would let it fly a short distance.