Using the Atacama Large Millimeter/submillimeter Array (ALMA), scientists have discovered that the interstellar invader comet ...

New observations of the interstellar comet 3I/ATLAS include the first measurement of the abundance of deuterated water ...

Comet 3I/ATLAS, an object from another star that was found speeding through our solar system last summer, is now fading from ...

Interstellar comet 3I/ATLAS is even more extreme. The ratio of semi-heavy water to regular water is 30 times larger than in ...

The water coming off comet 3I/ATLAS is not just unusual. It is extreme. Astronomers studying the interstellar comet found ...

Interstellar comet 3I/ATLAS is now on its way out of our solar system, never to return. The comet was only the third-ever ...

Astronomers studying interstellar comet 3I/ATLAS have measured a deuterium-to-hydrogen ratio in its water more than 30 times higher than in solar system comets and over 40 times Earth's oceans. The ...

Rare interstellar comet 3I/ATLAS is revealing clues about the early Milky Way, offering scientists a glimpse into conditions ...

A new intriguing study of the interstellar visitor 3I/ATLAS has revealed that the object’s chemical composition shifted ...

It's probably a comet, but it might be some sort of ancient alien spacecraft or probe. What's for sure is that the mystery surrounding an object known as 3I/ATLAS is becoming both more and ...

Remember 3I/ATLAS? Yes, the interstellar comet that made plenty of headlines in 2025 is still romping through our solar system. But it may not be around much longer. The otherworldly visitor to ...

A mysterious interstellar comet has been taking a tour of our solar system in recent months, garnering intense interest from astronomers and space enthusiasts alike. Comet 3I/ATLAS is only the third ...