When it comes to the topic of UFOs, it is incredibly easy to be a skeptic. If you are a rational person who refuses to blindly believe in pseudoscience, the modern landscape of extraterrestrial claims is exhausting. Far too often, the "evidence" is just a blurry piece of drone footage, a documentary featuring a cheap Halloween mask, or a convoluted conspiracy theory that falls apart under five minutes of logical scrutiny. But what happens when you strip away the tin-foil hats, ignore the pop culture myths, and look strictly at the declassified, historical data? Illustration generated exclusively for Zestrun From 1947 to 1969, the U.S. Air Force investigated over 12,000 reported sightings. While they successfully debunked the vast majority as hoaxes or misperceptions of natural phenomena, they were left with hundreds of cases classified officially as "Unknown." Here is a rational, evidence-based look at the history of these unknowns, and three of the most baffli...