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

A new interstellar object, A11pl3Z, has been discovered in our solar system, marking the third such object to be observed. It was first discovered zipping near the sun this fall.

Astrophysicist Josep Trigo-Rodriguez of the Institute of Space Sciences near Barcelona, Spain, believes it is an interstellar ...

A newly discovered object, dubbed A11pl3Z, appears to be moving too fast and straight to have originated in the solar system.

An object from outside the Solar System has been spotted hurtling towards the Sun, which, if confirmed, would be the third ...

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System -- only the third ...

The object is likely a 12-mile wide asteroid or comet from way, way out of town that just happens to be passing through our ...

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

By looking at the shifting of stars in photos from the New Horizons probe, astronomers have calculated its position in the ...