Add Yahoo as a preferred source to see more of our stories on Google. An interstellar tourist is taking a quick trip through our solar system, becoming one of just three known objects to ever do so, ...

The comet contains higher levels of this simple alcohol than almost all known comets from our solar system.

Comet 3I/ATLAS, the third known interstellar object ever detected passing through our solar system, carries a chemical signature that does not match what astronomers typically see in comets born ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. 2023 KQ14, nicknamed “Ammonite,” is a trans-Neptunian object ...