The combustible sedimentary rock, better known as coal, was not only crucial to the onset of advanced technology here on Earth, but it should also be key to the development of advanced E.T.s residing ...

The Fermi Paradox ponders an endlessly fascinating question: If so many worlds exist in the universe, why haven’t we detected any sign of extraterrestrial life? A possible reason, called the ...

A recent theory proposed by a NASA scientist suggests that extraterrestrial civilizations may not possess the wildly advanced technology that many UFO enthusiasts expect. This perspective, which ...

Here’s what you’ll learn when you read this story: Technosignatures are theoretical signs of technologically advanced alien civilizations, but so far, none of those civilizations have phoned home.

If so, why haven’t they said hello? The humble residents of this pale blue dot have been on a quest to find an alien civilisation for more than a century. First, it was the “canals” of Mars. Then ...