When Star Trek: The Original Series made its debut on NBC in 1966, it didn’t take long for aliens to make an appearance. Gene Roddenberry’s first attempt at a pilot, “The Cage,” featured telepathic beings that could concoct realistic hallucinations. (Although NBC rejected that pilot, footage from that episode was later incorporated into the two-part story arc, “The Menagerie.”). The first aired Star Trek episode, “The Man Trap,” centered around a shapeshifting alien that drew the salt out of unsuspecting victims. Fifty years, hundreds of TV episodes, and nearly a dozen movies later — to say nothing of the books …
