Read all about the eight different planets in the Solar System - Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune - and how they differ. Plus, find out why Pluto was reclassified as a dwarf planet in 2006, and discover fascinating facts about tidal forces.

Tour the Solar System with our essential facts and figures.

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

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

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

The Moon: its size, composition, gravity and potential for life.

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

The Sun’s diameter is 100 times that of Earth’s but its mass is 300,000 times greater and it is 15,000,000°C at its core.

What can explain high tide at London Bridge as well as Nova explosions from white dwarfs?

19th-century astronomers went beyond cataloguing the skies to understanding their composition and predicting what could not be seen.

The planet Uranus: first of the planets to be found in the modern era and dressed in rings. It orbits the sun on its side and the wrong way round!

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