Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about ...

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

Breaking space news, the latest updates on rocket launches, skywatching events and more! You are now subscribed Your ...

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

At the keynote panel at SXSW, Steven Spielberg revealed his beliefs that "we are not alone here on Earth right now." ...