Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered […] The post ...

"Impact probability is still very low, and the most likely outcome will be a close approaching rock that misses us." ...

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

Mounted on a robotic arm attached to a 33-m long rail, a camera system is brought closer and closer to this scale-model ...

Our solar system, a cosmic ballet of planets held together by gravity and inertia, is uniquely structured compared to many ...