I/ATLAS might be over 7 billion years old, a new study reports, which would make it the oldest comet known. But experts caution we need more data.

Scientists now say an interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever ...

On July 1, scientists discovered a mysterious object hurtling through our solar system.  Nicknamed 3I/ATLAS, astronomers say ...

When the news started to spread on July 1, 2025, about a new object that was spotted from outside our solar system, only the ...

The object seems to be travelling on a steep path - suggesting it came from the Milky Way's "thick disk", an area of ancient ...

Named 3I/ATLAS, the object reportedly rich in water ice was discovered on July 1 by the ATLAS survey telescope in Chile, when it was about 416 million miles (670 million kilometers) from the Sun.

A newly discovered comet, 3I/ATLAS, may be the most ancient visitor ever detected, potentially older than our solar system itself. Unlike previous interstellar objects, this ice-rich comet seems to ...

The object is big – possibly as wide 12 miles, larger than the asteroid that wiped out the dinosaurs – and is speeding ...

A rare visitor from another star system has been spotted: the interstellar comet 3I/ATLAS! It was detected July 1 by the NASA-funded Asteroid Terrestrial-impact Last Alert System, or ATLAS. Most known ...

After defending his PhD thesis on modeling interstellar objects on Monday, June 30, Matthew Hopkins intended to take some ...

AN INTERSTELLAR space rock zooming through our solar system may be the oldest comet ever seen by humans, according to ...

Comet 3I/Atlas may be the oldest spotted so far and should be visible through amateur telescopes in just a few weeks' time.