Aliens have been a widely debated topic in our culture for generations. From an unknown flash of light in the sky to the secrets kept at Area 51, many have accredited extraterrestrials to help explain ...

Robert Smith is convinced the aliens have won. "The invasion has happened—it's all over," says the University of Alberta space historian who teaches a course on the history of extraterrestrials. It's ...

Sci-fi depictions of extraterrestrial invasions can heighten anxiety about our efforts to make first contact, says METI president Douglas Vakoch A proposed framework to assess and communicate the ...