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

In a celestial event known as a great alignment the five planets will be discernible with the naked eye, but to see Neptune ...

Ice moons such as Jupiter’s Europa and Saturn’s Enceladus are currently at the forefront of the search for extraterrestrial life, as it is believed that beneath their thick icy shells there ...