Interstellar object 3I/ATLAS is confirmed as a natural comet from beyond our solar system, posing no threat to Earth despite ...

NBC News' Gadi Schwartz reports on "3I/ATLAS," mysterious outer space object that is thought to be billions of years old, ...

Hubble Space Telescope images of interstellar object 3I/ATLAS show a changing jet structure, including a stable sunward jet and three rotating inner jets, raising questions about their origin ...

Hubble images from December 2025 show interstellar object 3I/ATLAS releasing two narrow jets of material as it moves away from the Sun, raising questions about rotation and activity ...

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 ...

As the cosmic visitor 3I/ATLAS moves away from the outer solar system, it leaves behind a trail of scientific data that reads ...

The controversial Harvard astronomer is one of the main sources of the "alien mothership" hypothesis. This is what he thinks, ...

The night sky has always been a place where we can see our biggest mysteries. But the arrival of the third known interstellar ...

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.

Scientists studying the interstellar object ‘Oumuamua have proposed that it may be a fragment from a Pluto-like planet beyond our solar system. Researchers from Arizona State University's School of ...

Fresh analysis now suggests that 3I/ATLAS may measure barely one kilometre across, an unexpectedly small nucleus given the ...

Nasa’s Voyager 1 probe will reach a historic distance of one light-day from Earth in 2026. This milestone means radio signals ...