It is not often that a comet defies one of the most fundamental visual cues in astronomy-but 3I/ATLAS has done exactly that.

A rare visitor from deep space has swept through the inner solar system, offering astronomers a fleeting look at material ...

While online conspiracies swirl, comet 3I/ATLAS made a close pass by Earth on Dec. 19, giving astronomers a rare glimpse of a ...

Today is one astronomers, stargazers and alien conspiracy theorists have been waiting for: interstellar comet 3I/ATLAS is as ...

I/ATLAS may have moved away from Earth as it makes its way out of the solar system, but this interstellar intruder continues ...

New observations of 3I/ATLAS provide real data that scientists are using to evaluate asteroid behavior ahead of Apophis’ 2029 ...

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's everything to know about it.

While NASA's James Webb Telescope and other instruments have already spotted abundant water vapor, carbon monoxide and carbon ...

NASA’s Europa Clipper spacecraft has recorded important new observations of the interstellar comet 3I/ATLAS using its Southwest Research Institute-led Ultraviolet Spectrograph (UVS). In July, 3I/ATLAS ...

The interstellar comet 3I/ATLAS will reach its closest point to our world Dec. 19 and people will be able to observe it from ...

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...

I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches ...