A Harvard University professor has said that 3I/ATLAS experienced a sudden "nongravitational" acceleration while passing ...

An interstellar comet that originated outside our solar system has just made its closest pass to the sun, brightening ...

Here's where Comet 3I/ATLAS, Lemmon and SWAN are in the Halloween sky.

When Comet 3I/ATLAS roared into the solar system this summer, it launched a scientific scramble to study what astronomers ...

Interstellar comet 3I/ATLAS on Wednesday reached its closest point to the Sun, a point known as perihelion. Although this ...

Astronomers detect unexplained acceleration in interstellar object 3I/ATLAS as Avi Loeb suggests an artificial 'engine' can't ...

Interstellar object 3I/ATLAS reaches its perihelion, prompting Harvard's Avi Loeb to suggest it's an 'alien mothership.' ...

An interstellar comet that originated outside our solar system just flew by the sun. Next, the object will fly by Earth in ...

This is only the third interstellar comet scientists have observed. Its extreme brightening, unusual composition, and intense ...

Manhattan-sized comet 3I/ATLAS allegedly executed an unusual maneuver while approaching the Sun earlier this week, fueling ...

A rare cosmic visitor, 3I/ATLAS, the third confirmed interstellar object, was discovered in July 2025. This object, on a ...