President Donald Trump has repeatedly promised to reveal to a curious world what America's government knows about UFOs and ...

Letters: Readers offer their explanations for the absence of hard evidence for extraterrestrial civilisations, in response to an article by Adam Kirsch ...

The search for extraterrestrial life has evolved from philosophy to a serious scientific and national security concern ...

It may not breathe, eat, or sleep. It may not reproduce in any ordinary sense. It may not have a face, a voice, or a body shaped by evolution. It may be a machine. This is not a wild idea – it follows ...

For generations, humans have imagined what it would be like to discover life beyond Earth. Would alien beings look anything like us? Would they communicate through sounds, signals, or something ...

Searching for extraterrestrial intelligence has so far primarily meant focusing on one particular type of signal—and that signal has normally been based on our own current cutting-edge technology. But ...

If humanity ever makes contact with an intelligent extraterrestrial civilization, we will have no shortage of questions.

A provocative theory circulating among artificial intelligence researchers suggests that once machines achieve human-level intelligence and beyond, they might create something entirely unexpected: a ...

For as long as we’ve been exploring space, the search for alien intelligence has followed a familiar script. We point antennas at the sky. We listen for radio signals. We scan for massive structures ...

Artificial intelligence is advancing so rapidly that it may soon move beyond human understanding, said former Google CEO Eric Schmidt. "An alien intelligence is coming," he said at the Sifted Summit ...

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IN The shadows of Mount Shasta and Lassen Peak volcanoes in northern California, dozens of radio telescopes are gearing up to search for extraterrestrials. Thousands of kilometres away in Boston, ...