There was a space battle in the stars, a long, long time ago. No, not that long ago. Just in the 1600s, about forty years after Shakespeare died.
One day in April, a bunch of fishermen saw ships battling each other in the sky. Afterward, one of them hovered above the others. Shortly after it all ended, the fishermen became horribly sick.
This all makes it seem a bit less terrifying than it was, so here is the full description of what happened, according to a book written shortly thereafter:
"After a while out of the sky came a flat round form, like a plate, looking like the big hat of a man … Its color was that of the darkening moon, and it hovered right over the Church of St. Nicolai. There it remained stationary until the evening. The fishermen, worried to death, didn't want to look further at the spectacle and buried their faces in their hands. On the following days, they fell sick with trembling all over and pain in head and limbs. Many scholarly people thought a lot about that."
Scientists examined the case, and their best guess was "maybe birds? I don't know, did they hallucinate it?"
Good job, science. No wonder we haven't made it to Mars yet.