Do you think aliens in ufos have visited Earth? (And all things UFO)

Do you think aliens in ufos have visited Earth? (And all things UFO)

EGLSShin said
The phenomena of UFO's has been observed since the 1940's.

1639 is the earliest reported sighting in the US - https://newengland.com/today/living/new-england-history/ufo-sightings-alien-sightings/
218 BCE for Classical Antiquity - https://en.wikipedia.org/wiki/List_of_reported_UFO_sightings