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 ...

Imagine receiving a message from another world. Not from a distant galaxy millions of light years away, but from a planet orbiting the nearest star system to our own. A mysterious signal appears on ...

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 shoul ...

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 ...

The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new paper. Reading time 3 minutes In our search for life beyond Earth, we might ...

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 ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and ...

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, ...