In the vast expanse of the cosmos, where stars forge elements and planets cradle potential life, the arrival of an ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Current measurements estimate that 3I/ATLAS is about 12 miles (20 kilometers) wide, ...

Later in December, the 3I/ATLAS interstellar comet will get as close to Earth as it ever will. Here's what to know.

3I/ATLAS is the third interstellar object confirmed in our solar system. It likely originated from the Milky Way's thick disk and may be unusually large. It could be the oldest comet ever observed, ...

NASA is publicly insisting that the interstellar object 3I/ATLAS poses no danger to Earth, even as the agency and its ...

ExoMars Trace Gas Orbiter to track comet 3I/ATLAS, the third confirmed interstellar object to enter the solar system, as it traverses the Martian orbit at speeds reaching 155,000 mph (250,000 km/h).

Current measurements estimate that 3I/ATLAS is about 12 miles (20 kilometers) wide, and while its path won’t take it close to Earth, it could hold clues about the nature of a previous interstellar ...

The Haleakala Observatory, left, houses one telescope for the ATLAS system. That system first spotted the object 3I/ATLAS, which isn't visible in this image. AP Photo/Lindsey Wasson All of our ...