Newly discovered comet C/2025 V1 (Borisov), which has some minor similarities to 3I/ATLAS, will make its closest approach to ...

A radio signal? That would have to confirm the object is technlogical in nature, wouldn't it? The thing is, this isn't a ...

Scientists who study comets are struggling to keep up with popular speculation that the interstellar object 3I/ATLAS was sent ...

The surface of comet 3I/ATLAS may have been so radically altered by cosmic rays that deducing its home star system would be ...

After briefly escaping from Earth's view during a (very) close approach to the sun on Oct. 30, Comet 3I/ATLAS can finally be ...

A photographer says he feels "very lucky" to have captured Comet C/2025 A6. Also known as Comet Lemmon, it was first detected ...

The comet could be older than our solar system. The comet is also distinct because nickel vapor was detected in the gas ...

Even as a brilliant, naked-eye comet slices through Earth's sky (cheers, Comet Lemmon!), the most famous object in the solar system right now is hidden on the far side of the sun: the interstellar ...

Is it an interstellar wolf in sheep’s clothing? Earlier this week, the NASA-backed International Asteroid Warning Network (IAWN) launched an emergency defense probe after 3I/ATLAS exhibited unusual ...

Short-period comets get close to the sun much more often than their long-period kin, and every time they do, they deplete more of their gas and dust. Consequently, they don’t typically emit as much ...

The behavior, though dramatic, is perfectly normal for comets as they heat up while approaching a star, experts say. An ...

The interstellar comet is behaving just like one from our solar system. An interstellar comet is dramatically jetting off ice and dust into space, a new image shows. The comet, called 3I/ATLAS, is ...