Date: April 4,
Location: Nuremberg, Germany
At sunrise on the 14th April 1561, the citizens of Nuremberg beheld "A very frightful spectacle." The sky appeared to fill with cylindrical objects from which red, black, orange and blue white disks and globes emerged. Crosses and tubes resembling cannon barrels also appeared whereupon the objects promptly "began to fight one another." This event is depicted in a famous 16th century woodcut by Hans Glaser.
Hans Glaser woodcut from 1566 of the 1561 event over Nuremberg. (Wickiana Collection, Zurich Central Library)