The first thing to know about potential alien invaders is that they are no longer classified by the U.S. Government as unidentified flying objects.

That sounds too scary.

They are classified as unidentified aerial phenomena.

It sounds a bit better. Maybe it is just flying junk and debris left in outer space. Aliens have invaded pop culture, but is there more?

Even Sesame Street had it down, when a couple of aliens were stranded on Earth.

A newly published study is sparking renewed attention on the connection between unidentified aerial phenomena (UAPs) and historic U.S. nuclear-testing sites. Researchers found a surprising correlation between mysterious light flashes recorded during 1950s nuclear tests and subsequent UFO reports, raising questions about government secrecy, Cold War-er

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