I've been reading some Science Fiction books by H.G.Wells which were written in the 1800s. My grandfather loved his books, and also liked those by Jules Verne.
When Gramp was a boy back in the 1800s he lived in the Mission District of San Francisco.
One night, probably in the early 1880s he did something unusual. With the help of his younger brother he went outside after dark, lit a lantern, and tied it to the tail of a kite. Then he flew it in the dark sky above his neighborhood.
All over the area people came out and stared at the light moving in the sky. Nobody had ever seen anything like that before! They talked about it for days afterward.
Perhaps it was the world's first UFO sighting. At least it was certainly one of the first.