An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered the orbits of the ... that generated the most realistic results involved an object ...

A new study suggests that a close encounter with a massive interstellar object, possibly eight times the mass of Jupiter, may have significantly altered the orbits of the four outer planets in our ...

It's the wobbling star that has betrayed the existence of HD 20794d — astronomers have not directly observed HD 20794d, nor taken a picture of ... context of our solar system, Mars — on the outer edge ...

While most models of solar system formation predict perfectly circular and coplanar orbits for the planets, reality presents a slightly different picture. Successful Simulations: Approximately 1% ...