A comet born around a distant star is now tearing through our solar system at roughly 150,000 miles per hour, and astronomers ...

Where does the solar system end and interstellar space begin? That's a question scientists have been working to answer using ...

A Jupiter-size exoplanet orbiting a dead star baffled astronomers. But the planet named WD 1856 b could preview the fate of ...

(International Gemini Observatory/NOIRLab/NSF/AURA/Shadow the Scientist; Image Processing: J. Miller & M. Rodriguez ...

Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion ...

Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion years old—about three times the age of the solar system ...

The findings surprised researchers, who used the comet's composition to better understand the environment in which it formed.

Have you ever looked into the stars in the night sky and asked yourself questions like “What else is out there?” The universe ...

While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our ...

One year ago, on July 1 2025, astronomers discovered a fascinating new object moving through the Solar System. Detected by the Asteroid Terrestrial-impact Last Alert System (ATLAS), the object was ...

And unlike many other quality news outlets, we choose not to lock Americans out of our reporting and analysis with paywalls.