What is this?

I found this in my computer UFO file. Putting it in Google's image search took me to Pinterest and a few sites indicating it's (supposedly) Nikola Tesla's flying saucer (or UFO). Anyone got something specific on it:

Robert Sheaffer (and others) show Triangle UFO pic to be ??

 https://badufos.blogspot.com/2021/04/the-navys-triangle-bokeh-ufo-video.html?fbclid=IwAR0OH2Namn_T1yQYmWgGPKw9MWHdkKrQFfnPNH

s8Lq3uQ0v_NlikY82GjdE