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

Debunking alien claims matters, but so does telling richer, more compelling stories about how humans shaped their own past.

But not all sci-fi books are part of a series. There are a great number of standalone books that tell complete stories that are just as impressive as any series or franchise. Here are six such books, ...

The White House registered aliens.gov, a month after Trump ordered the release of all government UAP and UFO files following ...

Andy Weir discusses his science-fueled novel “Project Hail Mary,” which has been adapted into a film that opens in theaters ...

io9 spoke to directors Phil Lord and Chris Miller about some additions to the movie, out March 20.

Streetlights shaped like alien heads line the roads of Roswell, New Mexico, where murals of flying saucers streak across ...

Project Hail Mary's ending is wrapped up in science and some major surprises, but the movie also adds a scene not in the original book.

Wright-Patterson has played a central role in the US military’s real investigations into mysterious objects in the sky — from Cold War-era research programs to efforts to study what the government now ...