The curious minds at What If investigate what would happen if a quasi-star entered our solar system, revealing radiation, gravity, and planetary risks.

Add Yahoo as a preferred source to see more of our stories on Google. An illustration showing Planet Nine, a hypothetical, undiscovered planet in our solar system. New research now suggests the ...

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 ...

A rare discovery beyond Neptune is forcing scientists to rethink early solar system dynamics and the forces that shaped ...

Davide Farnocchia hunts down and tracks asteroids, and several years ago he saw something he couldn’t explain. Farnocchia works at NASA’s Center for Near-Earth Object Studies in California. Using ...