Scientists claim to have detected signs of a long-hypothesised alien power-generation technology in the Milky Way galaxy, hidden away in a trove of astronomical data. These hypothetical “Dyson spheres ...

Earth's cell signals may be detectable by civilizations in nearby star systems. If you want your phone, there isn't much to be done about it You can save this article by registering for free here. Or ...

If we could travel at 10 percent of the speed of light, we’d cross the Milky Way Galaxy in one million years. Presumably, an advanced alien civilization could be doing this already, zooming through ...

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 ...

British astrophysicist Stephen Hawking says aliens are out there, but it could be too dangerous for humans to interact with extraterrestrial life. Stephen Hawking, shown at Cape Canaveral, Fla., in ...

On July 20, Russian tech billionaire Yuri Milner announced a massive and unprecedented investment in the search for extraterrestrial intelligence (SETI) that’s taking the form of a $100-million, ...