"We are the first mission to be able to track space weather events in three dimensions routinely across the solar system." ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

Providing the skies are clear, residents, citizen scientists, and eclipse tourists will enjoy one of the most dramatic events witnessed in our solar system ... through this gallery before the ...

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.

There may be an undiscovered planet in the outer solar system whose presence is revealed by the strange orbit of objects beyond the eighth planet Neptune. The tantalizing prospect of a ninth ...