It is unclear whether a [3I/ATLAS] would transmit radio signals … such signals would take tens of thousands of years to cross ...

While the raw speed isn't too impressive, it was achieved using a laser with less power than an energy-saving lightbulb.

Some of the most tantalizing hints in the search for extraterrestrial intelligence have not been messy or chaotic, but eerily ...

We were overwhelmed by the response to our annual Letters to Santa feature, with more than 1,250 letters submitted this year. Due ...

The first unmistakable signal from another intelligence would rank alongside fire and writing in the story of our species, ...

Futurist Michio Kaku sees humans doing ballet on Mars and projecting their brains into the cosmos. And aliens? Oh, they're coming.

Israel isn’t the world’s most popular country, except when it comes to military hardware. A country the size of New Jersey is now the world’s eighth-largest arms exporter with a record-breaking $15 ...

Researchers at the University of Basel have developed a new approach to applying thermodynamics to microscopic quantum systems. In 1798, the officer and physicist Benjamin Thompson (a.k.a. Count ...

A new photonics chip that generates multicolored laser beams could supercharge data center technology and ease the strain of AI's surging data demands. When you purchase through links on our site, we ...

Israel is preparing to deploy one of the world’s first combat-ready laser air-defense systems, marking a historic shift in how nations defend against rockets, drones and missiles — and a sign that ...