An interstellar trespasser known as 3I/ATLAS is almost certainly a comet. So, why do so many people think it's ...

The path of comet 3I/ATLAS through the solar system has been predicted with an accuracy 10 times greater than previous ...

NASA has a photo dump of the interstellar comet 3I/ATLAS. It made news in July when it was confirmed to have originated ...

NASA will go live today to share long-awaited images of the mysterious interstellar object 3I/ATLAS. Is it nearing Earth? How ...

NASA released a trove of never-before-seen images of the interstellar comet 3I/ATLAS, unveiling new characteristics of the ...

Interstellar objects occasionally enter our Solar System, providing insight into the composition and dynamics of distant ...

I/Atlas isn’t sending messages. We explain the viral clip, the real radio detection from water chemistry, scientist responses, and its safe 170 million mile pass.

NASA released fresh images on Wednesday of the interstellar object called 3I/ATLAS that astronomers have determined is a ...

Scientists say 3I/Atlas came closest to Mars in October. Its path this month put it in the path of the warm rays of our sun, where a tail became more visible. The 3.5-mile solar object is traveling at ...

Scientists have long wondered why Earth's overall makeup doesn't fully match the mix of materials found in ancient meteorites. One hypothesis has been that our proto-Earth (what the earliest stages of ...

A visitor from deep space is racing through our solar system, and it is behaving so strangely that it's challenging everything we know about comets. This object, the third known interstellar visitor, ...