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

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.

"Just because it’s crazy doesn’t mean it’s not true, but we have to look into the realities," law enforcement told reporters.

Hundreds of mysterious objects have appeared in images captured by the Webb space telescope. The curious dots could reshape ...