Black holes can release enormous energy through hot disks, surrounding plasma and powerful jets, enough to support a ...

Most alien-signal searches listen to a narrow part of the radio spectrum, but astronomers are now testing higher frequencies that have barely been explored. A first search using archived ALMA ...

They’re hole-ar powered. If super-advanced alien civilizations exist, they would surely require insane amounts of energy to ...

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

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

These cosmic giants might one day propel our spacecraft, process unimaginable amounts of data, and even reveal advanced ...

Astronomers may have been listening for alien civilizations in only a small slice of the radio spectrum while overlooking a largely unexplored range of higher frequencies. Using archived data from the ...

The curious minds at What If explore what would happen if there were an alien civilization on Proxima b.

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

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

Somewhere in the Universe, an alien culture may have developed the technology to build giant megastructures around stars, ...

(cokada/iStock/Getty Images Plus) Last June, while most of us were sweating it out and scrolling socials, more than two dozen ...