Have you ever seen a UFO?

[eppur_se_muova]

13. Third option is a non sequitur -- no direct connection between ...

an object (perceived as "flying" or otherwise) being unidentified, and the possibility of alien life existing anywhere else in the universe.

"Unidentified" means you don't know what it is. This may indicate confusion or a lack of understanding, among many other explanations. I'm leaving this thread unlocked for that reason, as long as the woo content stays low. Probably worth noting that the planet Venus is regularly reported as a UFO when it is at its brightest, as are some of the brighter stars in the sky.

BTW, invoking Tesla as your exemplar only raises a red flag. Tesla was a clever inventor but remarkably unscientific, and his name is invoked by followers of woo as if he were a patron saint. His early successes came at a time when there was much new to be discovered and the field of electricity (no pun) was rife with opportunity. Many of his later experiments involved consumption or transmission (but not production) of enormous amounts of energy -- his laboratory in Colorado Springs frequently caused blackouts in the nearby town. But this has led his "fans" (abbreviation for "fanatics", if you'll recall) to believe, as a matter of faith, that Tesla had discovered new sources of energy. In fact, his "secret source" was the electric grid. His schemes for the distribution of electric power through the atmosphere would have rendered most electronic devices inoperable, if not destroyed them outright, and presented an enormous hazard to health and safety. He may have been visionary, but many of his visions were deeply flawed, and, after his earlier successes, he slipped into obscurity for good reasons, while men with more scientific understanding of the scientific principles of electricity and electromagnetism continued to make steady progress.