Scientists have identified interstellar comet 3I/ATLAS as the oldest known object to pass through the solar system, dating ...

In July 2025, astronomers detected 3I/ATLAS, a rare interstellar comet, prompting SETI researchers to scan it for alien ...

In July 2025, astronomers spotted something remarkable passing through our Solar System, an object that had not come from ...

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 ...

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 ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

Based on evidence collected by the James Webb Space Telescope, researchers have found that interstellar comet 3I/ATLAS could ...

The interstellar comet emitted methane, a potential biosignature, as it passed the sun, physicist Avi Loeb says.

A strange interstellar comet discovered last year and speculated by a prominent astronomer to be an alien spacecraft could be ...

An interstellar comet that blazed past the sun and swung by Earth last year could be nearly three times older than our solar ...

An interstellar comet that blazed past the sun last year could be nearly three times older than our solar system and is ...