Imagine a super-advanced alien civilization that needs insane amounts of energy way beyond our puny solar panels and wind ...

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

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 ...

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 ...

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

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 ...

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 ...

“There is a silence in the night sky that has bothered me for as long as I can remember.” That line, attributed to Richard Feynman, lands because it gets at a simple, stubborn feeling. The sky looks ...

Elon Musk’s plans for the future of SpaceX, and humanity, are rooted in an idea conceived in the 1960s when astronomers began to pick up mysterious, unknown radio sources in the cosmos. Soviet ...

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