Extreme solar activity or even a software glitch could put us just days away from a satellite collision in low-Earth orbit.

Astronomers have long debated why so many icy objects in the outer solar system look like snowmen. Michigan State University ...

On Aug. 14, 2019, a gravitational wave -- a massive ripple through the fabric of space-time -- washed over the Earth. The wave was detected by sophisticated, fine-tuned lasers in the U.S. and Italy.

The crew stands atop the Seawolf-class fast-attack submarine USS Connecticut in this 2018 photo. Smith Collection/Gado/Getty Images A US Navy submarine collided with an object in the Indo-Pacific, the ...

Jackson Ryan was CNET's science editor, and a multiple award-winning one at that. Earlier, he'd been a scientist, but he realized he wasn't very happy sitting at a lab bench all day. Science writing, ...