Observing the interstellar visitor after its closest approach, astronomers found that its composition appears to have changed ...

Astronomers have attempted to explain the non-gravitational acceleration of comet 3I/ATLAS, our third confirmed interstellar visitor, in a way that removes the need for "non-natural hypotheses for ...

Newly released images of the interstellar object 3I/ATLAS have captured a stunning cosmic phenomenon, an enormous jet of gas and dust blasting directly toward the Sun. The discovery has deepened ...