There are eight planets in the solar system, and each travels on its own path around the sun. But of these planets, which is nearest to the sun? Mercury is a strange little world. There are some ...

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...

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

The ecliptic can easily understood if you picture a flat, round disk with the sun at the center ... moving across to hide the red planet for around an hour as seen from North America.

There are eight planets in the solar system, and each travels on its own path around the sun. But of these planets, which is ...