It was in April 1561 when all residents of Nuremberg, Germany, came out of their houses to investigate mysterious lights and loud sounds. They watched the sky, in awe and fear as they witnessed what appeared to be some kind of air battle—and all of this in broad daylight of the early morning.

The reports of event say it lasted for about an hour, and artist  Hans Glaser  documented this strange event for the German Nuremberg Gazette. Describing the event, he refers to crosses, tubes, wheels, multi-colored objects and globes over the city. Hundreds of them. Objects would disappear in smoke, some even crashing into the ground. The smoke was visible for miles.

This image and description have begged explanation for centuries. What on Earth could explain these phenomena that were seemingly witnessed by many people?

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