Sputnik skies to analysis of interstellar visitors, scientists are rethinking how and where to look for physical traces of ...

A new paper posits that advanced alien civilizations may communicate through subtle flashes, like fireflies do on Earth. The thought experiment suggests that we need to avoid human biases in our ...

The first unmistakable signal from another intelligence may not be a cheerful greeting. A growing group of researchers is ...

Could the first confirmed signal from an extraterrestrial source be less a hello than a goodbye? Astrophysicist David Kipping argues as much, and his “Eschatian Hypothesis” reimagines the way ...

A crowd-sourced search for alien intelligence called SETI@Home is in its final stages, analyzing 100 radio signals of ...

Erich von Däniken, the Swiss author whose books on the extraterrestrial origins of ancient civilizations brought him both ...

Some scientific breakthroughs may be lost to time due to scandal and redaction, while others are simply a case of waiting for more evidence. We take a look back at some that made headlines—and that's ...

The SYFY miniseries Childhood's End, based on Arthur C. Clarke's alien invasion novel, has an ending that you won't be able ...

A major claim in the older media cycle was that NASA removed the book and related materials. Whatever happened during the original wave of reporting, the current reality is clear: NASA now provides an ...

If aliens from space can die and mourn their dead then they likely invented gods to worship. Because they missed their loved ...

In the 1970s, author Erich von Däniken was a household name, not only in his native Switzerland, but also in the U.S. and ...