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

A new study, currently under review for publication, suggests that an ancient cosmic visitor might have significantly altered the orbits of our solar system's giant planets. Scientists propose that ...

Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...

Mars will be making its closest approach to Earth in two years, and thus, the mighty red planet, named for the god of war ...

The six planets will be visible in the days immediately leading up to Jan. 21, and for about four weeks afterward. Mars, ...

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

This month's planetary alignment sees Venus, Mars, Jupiter, Saturn, Neptune and Uranus visible in the night sky all at once.

Mars, Venus, Jupiter, and Saturn can be spotted without special equipment, with Uranus and Neptune requiring a telescope.

Astronomer Dean Regas gives us the lowdown on the best things to look out for this winter, from a “planet parade” to the ...

Jupiter, Mars, Venus and Saturn are all visible with the naked eye in our night skies right now - here's where to look to see ...

"Astronomers will always assume a simple model unless there is overwhelming evidence that this simple model is flawed." ...

Worlds will align for a "planetary parade" in January, with four bright and easily visible to the naked eye. But an even ...