Complex, intelligent life in the galaxy appears vanishingly rare, with the nearest possible civilization perhaps 33,000 light-years distant. Yet despite the odds, scientists insist that continuing the ...

Scientists are confronting a mystery that has remained unanswered for more than 75 years: why has no evidence of an advanced ...

Most of our experience with the Search for Extraterrestrial Intelligence (SETI) has focused on capturing radio signals that alien species have sent out, whether intentionally or unintentionally. That ...

Scientists have issued a new blueprint for the day Earth receives a message from an alien civilization. Released Friday, the eight-point plan lays out how researchers should handle a potentially world ...

Add Yahoo as a preferred source to see more of our stories on Google. Advanced extraterrestrial civilization may be drawing power from the energy of the black hole. ©Image Credit: Unsplash / NASA ...

For decades, the search for extraterrestrial intelligence (SETI) has largely operated on the assumption ...

It would probably not be the first question we asked, and it would not be the most urgent. But it could be one of the most revealing. Did another intelligent species develop ideas about gods, souls, ...

Suppose an alien civilization discovers Earth and decides to investigate. Before it chooses a landing site or considers how to introduce itself, it faces a less dramatic question: how much mass should ...