A mystery interstellar object spotted by astronomers is the third to have been detected from beyond our solar system.

On July 1, 2025, the Asteroid Terrestrial-impact Last Alert System (ATLAS) survey telescope, located in northern Chile, ...

A week and a half after its discovery, there are clues about the origin and age of the interstellar comet 3I/ATLAS – and ...

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

British astronomers have discovered a mysterious object from space that is likely the oldest comet ever observed.This comet ...

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

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

A mysterious object, first observed hurtling across the solar system on July 1, has now been identified as "very likely to be ...

I/ATLAS is the third known interstellar object ever discovered At 15 km wide, it’s larger and brighter than ʻOumuamua or Borisov Scientists will analyze its light to trace its system of origin ...

A mystery interstellar object has been identified as the "oldest comet ever seen", according to scientists. The Oxford ...

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 ...