With the arrival of “Fargo” series creator Noah Hawley’s massive prequel hit show, “Alien: Earth,” the old rumor mill (unsurprisingly) has started to churn. Because, naturally, if you put “Earth” in ...

There’s no denying the allure of alien artifacts. Science fiction is awash in the material remnants of extraterrestrial civilizations, which surface in everything from the classic books of Arthur C.