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

The strange object sparked fears of an alien invasion when it whizzed through our solar system at the end of the last year.

Comet 3I/ATLAS arrived from beyond the Solar System carrying a chemical story unlike anything astronomers had measured before ...

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

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, ...

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

Astronomers have revealed new details about the makeup and age of a visiting comet that was born around a distant star. They ...

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

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

Juice observed 3I/ATLAS during perihelion, when Earth-based telescopes could not. Spectroscopic observations measured water ...

Astronomers first spotted Comet 3I/ATLAS in June 2025, and it was later confirmed as an interstellar visitor that originated from outside our solar system. As the comet’s name indicates, it is the ...