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

These things take millions of years to go from one stellar neighborhood to another, so this thing has likely been traveling ...

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

Astronomers have discovered a rare instance of a interstellar comet speeding through the solar system. The 3I/ATLAS was first ...

The newest visitor is 416 million miles from the sun, out near Jupiter, and heading this way at a blistering 37 miles per ...