An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

The Sun is the largest object in the Solar System. The Sun’s huge gravitational field keeps many other objects – planets, dwarf planets, asteroids and comets – in orbit around it.

However, most hypotheses agree on the type of orbit the planets should ... to their present states recreated the solar system's current appearance. The simulation that produced the most realistic ...