Stargazers will be treated to a dazzling six-planet "alignment" this January.

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – here’s how to spot the celestial show ...

The contrast between two clusters of marsquakes has led two scientists to suspect the internal structure of the Red Planet is ...

Mars has northern and southern hemispheres like Earth, but their defining characteristics are markedly different, a ...

Nowhere else in the solar system do we see such a large ... we can use data from hundreds and even thousands of seismometers ...

Stock illustration of all the solar system's planets. Mars, Venus, Jupiter ... For best viewing, head to a location with dark skies, bringing along binoculars or a telescope to spy the dimmer ...

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

Although it's being mistakenly promoted as a "rare planetary alignment," one of the best "planet parades" in half a century ...

New analysis of marsquakes, which are similar to earthquakes, could offer clues into how Mars has evolved over billions of ...

irregularly shaped moon and smaller than Mars' other moon, Phobos. Despite being unspectacular, Deimos remains a fascinating mystery. Deimos is one of only three moons in the inner solar system ...