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

This extraordinary celestial event will see the sky scattered with seven visible planets in what is known as a great planetary alignment. The eight planets in our solar system orbit the sun in ...

When I was a kid, there were nine planets. Now we know of thousands! But that includes exoplanets, alien worlds that orbit alien suns. Only eight planets call our solar system home. Or there might ...

February brings a rare planetary parade, with five bright planets in clear view and a special alignment of Mercury and Saturn ...

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

The eight major planets of our Solar System orbit the Sun ... or billions of miles through space to hit your retinas." Getty Images Stargazers will be able to enjoy the sight of the planets ...

In a recent study, an international team of astronomers used ALMA to capture high-resolution images of eight protoplanetary ... indications that giant planets are forming. This was surprising ...