The long-serving space telescope saw the third interloper to enter the solar system from beyond its limits late on Monday ...

The Andromeda galaxy is the galaxy next door, a very faint, fuzzy thing in the night sky, larger than a full moon. Textbooks ...

Scientists are racing to learn as much as possible about the interstellar comet 3I/ATLAS before it fades from view forever ...

A decade of observations by NASA’s Hubble Space Telescope has produced the sharpest and most detailed images of the Andromeda ...

Fresh evidence claims that the Earth and the surrounding galaxy are suspended inside a cosmic void based on echoes from the ...

This stunning image dubbed 'Cosmic Owl' captures a remarkable moment in deep space, billions of light years away.

Deep within the Milky Way’s core, researchers have uncovered cold gas clouds racing through a superheated galactic wind. These clouds sit high above the plane of the galaxy, deep inside enormous ...

Particular stars called Cepheid variables allow astronomers to determine distance, and Hubble spotted one of these within M31.

A Manhattan-sized interstellar comet, named 31/ATLAS, was spotted blazing through our solar system – marking only the third time a mysterious object from beyond our cosmic neighborhood has been ...

A NASA visualization showing the Milky Way and Andromeda at four billion years from now, if they make an encounter.

NASA's Chandra X-ray Observatory provides a new look at the Andromeda galaxy in this multi-wavelength image that includes X-ray, ultraviolet, optical, infrared, and radio images and illustrates the ...