This is only the third interstellar comet scientists have observed. Its extreme brightening, unusual composition, and intense gas activity offer a rare glimpse into materials and behaviors from outside our solar system, and a reminder that the universe is full of surprises.

As interstellar object 3I/ATLAS reaches its perihelion, Harvard astronomer Avi Loeb suggests it could be an alien 'mothership' or 'Trojan horse.' Find out why he believes this, and what scientists expect to see next.

Astronomers have identified Comet 3I/ATLAS as an interstellar object, making it only the third confirmed visitor from outside our solar system, according to NASA.<br /><br />The comet is travelling on a hyperbolic trajectory,

Avi Loeb appeared on The Joe Rogan Experience podcast, where interest in the Interstellar visitor 3I/ATLAS was revived. The Harvard astrophysicist suggested that the object might be more than a normal comet.

Harvard astrophysicist Avi Loeb says data on 3I/ATLAS show unexplained acceleration and colour anomalies, urging scientists not to dismiss the evidence as mere error.