Black holes can release enormous energy through hot disks, surrounding plasma and powerful jets, enough to support a civilization far beyond ours. Any giant collector would release unused energy as ...

A new study published as a preprint on arXiv suggests that advanced extraterrestrial civilizations might not need to surround ...

Imagine receiving a message from another world. Not from a distant galaxy millions of light years away, but from a planet ...

Searching for extraterrestrial intelligence has so far primarily meant focusing on one particular type of signal—and that ...

Looking ahead: Existing radio surveys may contain signals that were never recognized as potential technosignatures. New ...

For decades, science fiction writers have tried their best to prepare us for eventual contact with aliens. Their efforts are dominated by several recurrent tropes. There's the invasion by a warlike ...

Researchers are zeroing in on more deliberate “narrow-band” alien signals, well outside the radio frequencies SETI has ...

Chilling Reasons We Haven’t Made Contact With Aliens Yet For decades, the idea of making contact with extraterrestrial life ...

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 ...

Hollywood makes initiating alien contact seem much easier than it has proven to be. In E.T. the Extraterrestrial, E.T. got stranded on earth when his alien compadres abandoned their botany mission. In ...

A Soviet astronomer in the 1960s proposed a scale to classify hypothetical alien civilizations. Here’s why the framework is still coming up today.

For decades, SETI researchers have focused on finding narrow-band radio signals that might stand out from the natural universe. But what if an advanced civilization that wanted to communicate would ...