Interstellar Visitor May Have Scrambled Our Solar System
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 ...
Live Science on MSN3d
An interstellar visitor may have changed the course of 4 solar system planets, study suggests
An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...
Forbes23d
Mars’ Small Mass Still Puzzles Planetary Scientists
Earth and Mars in comparison. Mars has only about 10.7 percent of earth's mass but is roughly half ... [+] its radius. Mars remains a true puzzle, but not for the reasons most people would think.