Add Yahoo as a preferred source to see more of our stories on Google. Adam Glanzman/For The Washington Post via Getty Images A lot of serious scientists are searching for signs of alien life. Most of ...

Add Yahoo as a preferred source to see more of our stories on Google. Technosignatures are theoretical signs of technologically advanced alien civilizations, but so far, none of those civilizations ...

A new study published in the journal Astrophysical has outlined a novel method that could be used to detect advanced alien civilizations remotely. The premise is to look for signs of nuclear fusion on ...

The “post-detection protocols” for announcing the discovery and existence of alien life have just had their first major update in 16 years, though the all-important "no reply" rule remains in place.

Astronomers warn humanity’s first alien detection may shock and surprise. Signals may not be friendly greetings but extreme and unmistakable. New research suggests initial contact could come from ...

Planet Earth could be giving out its own signals, which could in turn be detected by distant astronomers on an alien planet ...

A lot of serious scientists are searching for signs of alien life. Most of them are looking really, really far away—often in other star systems. But Harvard physicist Avi Loeb is looking nearby, in ...

In the endless search for technosignatures—signs from some technologically advanced intelligent alien civilization—we've done everything from monitoring radio arrays to hypothesizing about whether ...