The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...
New research suggests that a massive, unidentified object might have passed through our Solar System billions of years ago, ...
An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...
When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...
Michigan State University and NASA researchers discover seven dark comets that reveal new solar system secrets.
A new study suggests that a planet-sized object may have passed through the solar system billions of years ago.