I think in this case the 'after-story' comments are correct in that the picture is a theological metaphor, not an attempt to depict a flying saucer.

As mentioned by a number of the conversation posters the text above the "disc" makes reference to the first line of Psalm 84 verse 11 :-
"For the Lord God is a sun and shield...."

There's some bloody clever folks out there IMO

Having said that, there are so many unexplainable things from our past that could be interpreted as visits from UFO's

Fascinating for me