I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

It is only the third such object to have been identified as having an interstellar origin, which means it did not begin its journey in our Solar System and will not end it here.

A new interstellar object has been spotted careening into the solar system at an extremely unusual trajectory.

Astronomers have spotted unusual molecular activity in the largest Oort Cloud comet, comet Bernardinelli-Bernstein (C/2014 ...