An object dubbed 3I/ATLAS is only the third interloper from outside the Solar System seen in all of human history.

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth — but closer to the red planet than us at a safe 150 million miles (240 ...

NASA has discovered a new interstellar comet that's currently located about 420 million miles away from Earth. The space ...

The newly discovered interstellar visitor is just the third of its kind and fascinates astronomers who hope to learn from it ...

Astronomers are tracking a newly spotted comet hailing from parts unknown, only the third time such an interstellar object ...

A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from around here. Believed to be a comet, the object is ...

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...