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

A strange class of comet could explain the enigmatic behavior of ‘Oumuamua, the first known interstellar object—and even shed ...

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 ...

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

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

Add Yahoo as a preferred source to see more of our stories on Google. (Ianm35/iStock/Getty Images Plus) The Solar System is one of the comforting constants of human existence. No matter what else we ...

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 ...

Comet 3I/ATLAS arrived from beyond the Solar System carrying a chemical story unlike anything astronomers had measured before ...

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

Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...