Hi,

Recently it occurred to me to wonder what is the latest date in Earth
history when an extraterrestrial visit (a non-clandestine visit, i.e.)
could have occurred without having been recognized as such?

In asking the question, I am, of course, assuming that prior to some date
(now passed) an extraterrestrial appearing openly, to an individual or in
a community, would be explained as some kind of supernatural being or
simply a rare form of sentient but indigenous life.

Naturally, I'm also assuming these etraterrestrials could not be mistaken
for or somehow pass as humans themselves.


Any ideas?

Randall Schulz