If alien civilizations rise and fall, they may leave behind artifacts long after they are gone. From abandoned megastructures ...

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.

Across the globe, ancient artifacts continue to captivate and astonish people today. From mysterious objects that defy explanation to rare treasures that reveal unexpected glimpses into history, these ...