Observations of the fast-moving interstellar comet with the Very Large Telescope in Chile support similar observations made ...

Astronomers have used the European Southern Observatory's Very Large Telescope (ESO's VLT) to study the composition of ...

During last year’s brief visit from the comet 3I/ATLAS, astronomers got an extremely rare glimpse into the cosmos beyond our ...

Interstellar comet 3I/ATLAS carries isotopic ratios entirely outside the Solar System range, ESO’s Very Large Telescope has ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar System and is unlike anything ever before seen in our cosmic backyard, ...

Interstellar comet 3I/ATLAS may be older than our solar system, offering a rare glimpse into the early galaxy.

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

Observational evidence now suggests that the comet “3I/ATLAS,” known as the third interstellar object to visit our Solar ...

A new study into the 3I/ATLAS interstellar comet points to it having been born as far back as 12 billion years ago in a very ...

In the latest research, telescope observations of 3I/ATLAS examine its chemical structure and suggest that it took shape in a ...

Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion ...

Using carbon isotopes in the comet to estimate its age, the authors believe it may be even more ancient than earlier estimates had suggested—as old as 12 billion years. That’s far older than our own ...