A mysterious interstellar object known as 3I Atlas has entered our solar system, and the more scientists observe it, the stranger it becomes. Unlike typical comets, it began brightening far beyond ...

A newly discovered interstellar object is moving through the solar system at around 137,000 mph, and it did not take long for ...

Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion years old—about three times the age of the solar system ...

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, ...

One year ago, on July 1 2025, astronomers discovered a fascinating new object moving through the Solar System. Detected by the Asteroid Terrestrial-impact Last Alert System (ATLAS), the object was ...

Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

An interstellar comet that recently passed through the solar system may have formed as long as 12 billion years ago, making ...

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

Interstellar comet, 3I/ATLAS, might be one of the oldest celestial bodies ever seen, potentially forming 10 to 12 billion years ago. This ancient visitor, detected in July 2025, could offer ...

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

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