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

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.

According to the study, interstellar object 3I/ATLAS showcased its first sign of a non-gravitational acceleration at perihelion, or the point of closest approach to the Sun. The non-gravitational acceleration was detected at a perihelion distance of 1.36 times the Earth-Sun separation, equivalent to 203 million kilometers.

Due to the opposing perihelion alignment, the comet won't be generally visible until November, emerging low above the horizon at dawn.

NASA has announced that the interstellar comet 3I/ATLAS will approach Earth on October 29, 2025, marking its closest encounter at approximately 167 million miles away.

A signal unlike any other has reached Earth. The 3I/ATLAS project detected a unique transmission using the Fibonacci sequence at 1420 MHz.

Interstellar object 3I/ATLAS reaches its closest point to the Sun today. Astrophysicist Avi Loeb suggests it might release mini probes before Christmas. The object's trajectory and composition are being closely watched.