The Solar System

Discover all you need to know about the planets, comets and asteroids that orbit the Sun and make up our Solar System. Read the varying theories about the origins of the Solar System and find out how you can become an amateur astronomer and view it with your own eyes.

The challenges of measuring everything from a fast-moving, wobbly platform through a haze.

What Pluto, Ceres, Haumea, Makemake and Eris, the dwarf planets lack in size they make up for in mystery. 

Handy tables of orbits, mass, rotation periods and tilts for the planets and their moons in the Solar System.

The planet Saturn: truly massive and stunningly beautiful with its rings. It’s also home to amazing moons like Titan.

With a telescope we can see billons of miles and travel effortlessly back billions of years in time.

Sunspots are cooler parts of the Sun’s surface caused by massive changes in the Sun’s magnetic field.

What can you see through binoculars or a small telescope of the Solar System?

Temperature swings of over 500°C in a single day? Beyond Earth, the weather forecast is mostly terrifying.

It is a star, is it a planet or is it a plane? A handy guide to identifying that bright object you saw last night.

The orbits, atmospheres and compositions of the terrestrial, gaseous and dwarf planets in the Solar System.