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

For the first time, a quantum radiation reaction in strong electromagnetic fields has been demonstrated experimentally by ...

A suspected meteor that fell from the sky over the Cleveland area shook homes and startled residents who heard a boom that some compared to an explosion.

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

Astronomers have slammed SpaceX and Reflect Orbital plans for unnaturally brightening skies and disrupting ecosystems.