New observations of the unusual anti-tail of comet 3I/ATLAS have reignited debate over the object’s origin.

New images of the interstellar object 3I/ATLAS, captured by the Hubble Space Telescope on December 12 and 27, 2025, reveal a distinctive double-jet structure, according to an article by Avi Loeb, head of the Galileo Project and founding director of Harvard University’s — Black Hole Initiative.

The year 2025 has captivated stargazers worldwide as three remarkable comets surged into the inner solar system, dazzling observers as they endured close encounters with the sun before re-emerging and speeding back into the depths of space, never to return.

Avi Loeb, Baird Professor of Science at Harvard University and bestselling author of Extraterrestrial and Interstellar, has addressed the possibility of material from the interstellar comet 3I/ATLAS reaching Earth.

As of December 19, 2025, the interstellar visitor 3I/ATLAS (officially C/2025 N1) is making its closest approach to Earth before continuing its journey out of the Solar System.

Comet 3I/ATLAS, the third interstellar object ever detected by astronomers, will make its closest approach to Earth overnight on Friday, passing at a distance of 168 million miles (270 million kilometers). The comet poses no threat to our planet.

A recent article published on Medium by Avi Loeb, head of the Galileo Project and founding director of Harvard University’s Black Hole Initiative, highlights the discovery of a new anomaly in the interstellar object 3I/ATLAS, highlighting a rare alignment of its rotation axis with the Sun.

As of December 14, the comet object 3I/ATLAS is approximately 270.5 million kilometers from Earth.

The European Space Agency’s XMM-Newton X-ray space observatory recently observed interstellar comet 3I/ATLAS for about 20 hours on December 3, when the comet was approximately 282-285 million kilometers from the spacecraft.