In these science fiction books, extraterrestrial beings are sympathetic, horrifying and everything in between.

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

If I were looking at Earth from a distance, I would be pretty disappointed,” theoretical physicist Avi Loeb says. “Most of ...

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 ...

These findings suggest that the absence of past detections does not mean discovery is imminent. If extraterrestrial ...

Comet 41P/Tuttle-Giacobini-Kresak has begun acting a little unusually, but there are likely natural explanations before we go ...

Stretching across the sun-baked plains of southern Peru, the Nazca Lines have inspired awe, obsession, and wild speculation ...

The highly anticipated second season of Alien: Earth will feature a brand-new character as FX reveals the addition of an ...

Released in March, the new sci-fi flick 'Project Hail Mary' features Puerto Rican puppeteer James Ortiz, who stars opposite Ryan Gosling.

Two archaeologists explore the enduring myth that extraterrestrials contributed to the various ancient cultures around the world. When you purchase through links on our site, we may earn an affiliate ...

Two newly registered federal website domains – Alien.gov and Aliens.gov – are drawing attention after records showed they were created this week by a U.S. government agency, fueling speculation as ...