An extraterrestrial misunderstanding led to a grave-robbing bonanza at the detriment of valuable Peruvian heritage.

Two archaeologists explore the enduring myth that extraterrestrials contributed to the various ancient cultures around the ...

Mars is starting to look less like a dead world and more like a planet that once had the right pockets for life to take hold. The latest focus is on enormous caverns apparently carved by flowing water ...

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself? The idea that aliens assisted the ...