Are humans alone in the universe, or could intelligent alien civilizations exist somewhere beyond Earth? For more than 60 ...

Alien life may not need the kind of home humans instinctively search for. Some of the strangest possibilities begin once ...

Some people treat the idea of aliens as nonsense, but scientists actually believe that the notion we're alone in the entire universe is alien! The universe is so vast and so unexplored that ...

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 ...

What if aliens were building a massive power plant?Last time, I talked about the "Kardashev scale," which classifies the ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of an exoplanet in an alien star system. New research suggests that radio emissions from intelligent aliens may be ...