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.

Technosignatures are theoretical signs of technologically advanced alien civilizations, but so far, none of those civilizations have phoned home. Researchers from the Search for ExtraTerrestrial ...

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 ...

So far astronomers have discovered nearly 6,000 exoplanets—worlds that orbit stars other than our sun. If that number already feels ridiculously large, you’d better brace yourself: extrapolation of ...

Astronomers who detect a credible signal from aliens after 2026 will be barred from announcing it publicly or sending any kind of reply until it has been painstakingly verified and reviewed through ...

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.