The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...
An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...
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 ...
Our Solar System is a carefully balanced celestial dance held together by a virtually perfect balance of gravity and inertia.