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

Renewed attention is falling on the base after the disappearance of retired Air Force Maj. Gen. William Neil McCasland.

McCasland, 68, went missing from his Albuquerque home on Feb. 27 — which is the same day that a conspicuously credentialled X ...

Maj. Gen. William Neil McCasland, who retired from Wright-Patterson Air Force Base near Dayton, Ohio, is missing in New ...

A retired general from the Air Force has mysteriously disappeared in the wake of Trump announcing the release of government’s UFO-related files.

The alien-like machines, described as ‘legged metamachines’, are built from autonomous modules that can be snapped together ...

Maj. Gen. William Neil McCasland retired as commander of a facility at Wright-Patterson in Dayton, Ohio. His name has come up ...

In the spring of 1967, a series of unusual sightings began to grip the Soviet Union. From the rural landscapes of Ukraine to the robust Caucasus Mountains, thousands of citizens reported seeing ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Last week was head-snapping for anyone interested in life beyond our planet. First, former ...

Since the first Search for Extraterrestrial Intelligence (SETI) experiment in 1960, scientists have been scanning the Milky Way for signs of advanced alien civilizations. They have looked for unusual ...

In the 1990s, the Central Intelligence Agency dug into all it knew about the possibility of extraterrestrial visits, ultimately revealing what it found: Most of the supposed early UFO sightings were ...