Guest Stars

The alien invasion genre has been the subject of many science fiction tales. While a few, like "E.T.: The Extraterrestrial," included benign, friendly aliens, the vast majority have featured aliens who wanted to conquer the Earth and/or lay waste to it. Even "The Day the Earth Stood Still," which featured an alien who wished the human race well, carried ominous warnings that mankind would be destroyed if we could not restrain our violent tendencies and our weapons. But how realistic are any...