Interstellar comet 3I/ATLAS is now within 300 million km of Earth. Discover why NASA and ESA are tracking this ancient ...

Comet 3I/ATLAS is cutting across the solar system on a trajectory that does not quite match expectations, threading past the ...

Key Findings The tail shouldn't exist at that distance. The mass loss exceeds what the object can afford to lose. What we're ...

When a faint green smudge appeared in images from a backyard telescope in Aguadilla, Puerto Rico, on Nov. 22, 2025, astronomers did not expect it to upend basic assumptions about how comets work. Yet ...

It was soon deduced that this is an interstellar comet, meaning it has come from another solar system. It’s only the third ...

According to the team, the object likely came from the direction of Sagittarius, and will depart our Solar System towards ...

Interstellar comet 3I/Atlas has moved within 300 million km of Earth as scientists continue tracking its rare journey.

NASA will host a live event at 3 p.m., Wednesday, November 19, to share imagery of the interstellar comet 3I/ATLAS.

NASA maintains 3I/ATLAS is simply a comet. Still, Loeb commented that if spacecraft such as Juno detect unfamiliar hardware orbiting Jupiter after ATLAS passes, it would force humanity to rethink its ...

New telescope observations reveal structural features never documented in any known celestial object The morphology defies conventional understanding. The forward anti-tail persists where physics says ...

Discover NASA's latest images of the extraordinary interstellar comet 3I/ATLAS, the third comet from another star entering ...

NASA released new images of 3I/ATLAS, the third comet ever to be discovered in Earth's cosmic neighborhood originating from ...