​Comet 3I/ATLAS has been getting a lot of attention lately because it keeps showing signs that don’t fully fit what we normally expect from a comet. Avi Loeb, a well-known Harvard astrophysicist, ...

The interstellar object 3I/ATLAS has ignited debate on whether it's a rare comet from a distant star or an alien probe.

The interstellar object 3I/ATLAS defies comet science with an anti-tail, stable core, and anomalous acceleration. Harvard's ...

Because of these strange features, experts say the tail does not look like it is made from the usual dust and gas that most comets release. On top of that, the tail becomes dim very quickly, which is ...

KEY FINDINGS The structure is wrong for a comet. The direction of the activity defies solar physics. And every new image ...

New details emerge about the interstellar comet 3I/ATLAS. Its tail appears unusually thin and straight, unlike typical comets ...

Key Findings A new deep-sky image of 3I/ATLAS captures a tail so long and sharply defined that it stretches more than fifteen ...

A fireball lit up the skies over the Great Lakes in the early hours of Sunday and was visible for hundreds of miles.

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 ...

NASA Associate Administrator Amit Kshatriya said that despite many rumors about the traveler, it was definitely a comet, not ...

Harvard scientist Avi Loeb speculated that NASA’s recently released photos of 3I/ATLAS could potentially point to its ...

The object is the third interstellar visitor to our solar system ever confirmed. It will reach its closest point to Earth ...