3I/ATLAS is now exiting our solar system at more than 137,000 miles per hour.

Outside of Earth, the Universe is vast and ever-changing. Recently, there was a big discovery in our celestial backyard.

Our solar system's famous "invader" might be as old as the Milky Way itself. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The interstellar ...

Scientists studying comet 3I/ATLAS believe the mysterious interstellar object may have formed 11 billion years ago in an ...

Darryl Z. Seligman is an Assistant Professor of Physics and Astronomy at Michigan State University. Comet 3I/ATLAS is the third large interstellar visitor that we have ever discovered —- an asteroid ...

Spread the loveThe cosmos is full of wonders, and recently, a captivating celestial event has captured the attention of stargazers around the world. A visitor approaches the solar system in the form ...

Cosmology Largest-ever 3D map of the universe shows 47 million galaxies, from the Milky Way to 'cosmic noon' — Space photo of the week Astronomy The night sky could get three times brighter as new ...

The presence of deuterium, an isotope of hydrogen, in 3I/ATLAS suggests the interstellar comet formed in a much colder place before our solar system existed.

The two green comets continue to shine brightly in twilight each evening for lucky skywatchers with binoculars in the Northern Hemisphere. For observers on Friday, Oct. 24, the bright Comet Lemmon ...