Alien conspiracy theory is getting respectable (with a little help from "Disclosure Day"), and it has helped bring America ...

There are many powerful alien races in the Dragon Ball franchise, but only a few of them could actually destroy the Earth.

Astronomers studying the atmospheres of several intensely heated exoplanets uncovered an unexpected pattern that may reveal a hidden property of these distant worlds.

Radiant's 1-megawatt nuclear microreactor will deliver uninterrupted power to U.S. military bases. Explore how the ...

More than 100 planned wind farms in 21 states are now stalled indefinitely as the Pentagon delays military reviews once seen as routine.

Chariot Defense is adapting electric-vehicle technology for the battlefield, where drones, sensors, jammers, and ...

When you buy through our links, we may earn a commission. Our process 'ZDNET Recommends': What exactly does it mean? ZDNET's ...

One of the biggest challenges facing the AI boom is how to efficiently cool the massive, energy-intensive data centers that ...

The TRAPPIST-1 system, located about 41 light years from Earth, has been a focal point of much exoplanetary discussion—mainly ...

Radio astronomers recently hunted for " technosignatures " coming from 3I/ATLAS, which is just the third confirmed ...

NEW YORK (AP) — A moment early on in “Disclosure Day” will instinctively feel familiar to anyone who grew up with Steven Spielberg films. A TV weather report predicts hail. The camera pans downward, ...