Most of our experience with the Search for Extraterrestrial Intelligence (SETI) has focused on capturing radio signals that ...

Love it or hate it, artificial intelligence is likely here to stay. Its ravenous need for computational power has overwhelmed chip manufacturers and power companies alike. While our current AI ...

Somewhere out there, four alien civilizations might already know we exist—and their intentions could be far from friendly. Here's what science really says about it.

(Esben_H/iStock/Getty Images Plus) The Fermi paradox asks: If there are other civilizations in the Universe besides ours, why ...

The Kardashev Scale offers a fascinating way to imagine how advanced alien civilizations could become and what their ...

A team of researchers argues that the Moon could have been collecting microscopic fragments of alien technology for billions ...

We are not done trying to make sense of the jolts and lurches of Trump 2.0. Take foreign policy: President Trump and a group of intellectuals of the “New Right” have transform ...

Researchers propose that tiny technological remnants from extinct alien civilizations could have landed on the moon after ...

Add Yahoo as a preferred source to see more of our stories on Google. Image: NASA For roughly four billion years, the Moon has been collecting things. No weather to scrub the surface. No plate ...

Fuel would be an issue on such a long journey, so the AI-theorized probe would need a solar-electric power system and head ...

Johnston is in the midst of scaling up Starcloud, working through technical issues, and raising hundreds of millions of dollars. So he’s pretty busy. But Johnston also wants to send a mission to the ...

October is shaping up to be a surprisingly intriguing month for sci-fi books, with familiar worlds being reinvented, acclaimed authors launching something completely new and time travel getting more ...