NASA's James Webb Space Telescope found unusual isotopic signatures in interstellar comet 3I/ATLAS, suggesting it formed up ...

The findings surprised researchers, who used the comet's composition to better understand the environment in which it formed.

What can 3I/ATLAS teach astronomers about the origins of life?

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents ...

One year ago, on July 1 2025, astronomers discovered a fascinating new object moving through the Solar System. Detected by ...

Astronomers first spotted Comet 3I/ATLAS in June 2025, and it was later confirmed as an interstellar visitor that originated ...

In July 2025, astronomers detected the third known interstellar object ever observed passing through our solar system—an ...

The interstellar comet 3I/ATLAS may be almost three times older than the Solar System and have a unique chemical composition.

Scientists reveal comet 3I/ATLAS is up to 12 billion years old, offering insights into ancient planetary systems and cosmic ...

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an ...

Interstellar comet, 3I/ATLAS, might be one of the oldest celestial bodies ever seen, potentially forming 10 to 12 billion ...