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

Astronomers this week confirmed the discovery of an interstellar object racing through our Solar System – only the third ever ...

Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.

"We have found a planet around Proxima Centauri." Proxima b is a mere four light years from the Solar System, meaning that it is essentially in our back yard on the scale of our galaxy, the Milky Way.

A quiet, glowing gas cloud has been hiding in plain sight not far from Earth. For decades, astronomers have predicted that ...

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

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

A comet has entered the Solar System from interstellar space and will pass through the inner planets later this year, NASA ...

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

WASHINGTON (Reuters) -Astronomers are tracking a newly spotted comet hailing from parts unknown, only the third time such an ...

Officially named 3I/ATLAS, the comet was confirmed as having originated outside of Earth's solar system on July 3, according ...

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