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- Solar System Overview -
- Sun and Planets -
- Moons and Small Bodies -
- Space Exploration -
- Beyond the Solar System

When you're ready to begin your voyage of discovery, choose a destination from the list below or browse all of our pages from the menu above!
SUN AND INNER PLANETS
The Sun

The Solar System's one and only star
Mercury

The closest planet to the Sun and the smallest of the eight regular planets.
Venus

Venus' bright and beautiful appearance hides a suffocating world covered in volcanic ruins and surrounded by a toxic atmosphere.
Earth

Your home and the only planet in the Solar System known to support life. Has one moon.
Mars

The Red Planet. Once a planet covered in water, now dry and deserted, although a popular destination for unmanned space craft. Two moons orbit it.
ASTEROID BELT AND THE OUTER PLANETS
Asteroid Belt

A region of small rocky worlds separates the Inner Planets from the Outer Planets.
Jupiter

The Solar System's largest planet, home of the Great Red Spot, a storm that has been raging for hundreds of years. Jupiter has at least 79 moons orbiting it.
Saturn

Surrounded by beautiful rings, Saturn is the second largest planet in the Solar System. It has at least 62 moons.
Uranus

Orbiting the Sun on its side, Uranus was discovered in 1781. It has 27 moons.
Neptune

The most distant of the eight regular planets, Neptune is a cold world with 13 known moons.
DWARF PLANETS
Ceres

A Dwarf Planet situated within the Asteroid Belt between the orbits of Mars and Jupiter.
Pluto

Discovered in 1930, Pluto was the ninth planet in the Solar System until it became known as a Dwarf Planet in 2006. It has five moons.
Haumea

An odd-shaped little world, Haumea was discovered in 2003 and is known to have two moons. Image is artist's impression.
Makemake

Pronounced Ma-ke, ma-ke, Makemake was discovered in 2003 and is thought to have one moon.
Eris

Discovered in 2005, Eris is the second largest Dwarf Planet. It has one known moon and takes a whopping 557 years to get around the Sun. Image is artist's impression.
OTHER OBJECTS AND EXPLORING SPACE
The Moon

Earth's companion in space and the only object other than Earth to be stepped on by human beings.
Comets

Balls of rocks and ice that travel in elliptical orbits and form tails as they near the Sun.
Stars and Galaxies

There are billions of stars in the galaxy and billions of galaxies in the universe.
Space Exploration

Learning about space means visiting it. This is mostly done by unmanned spacecraft but sometimes people visit space themselves!
Astronomy

Observing the heavens is something that can be done from the comfort of your own planet.
Differences between Inner and Outer Planets
Planets Table
Solar System's 20 Largest Objects
Formation of the Solar System
Comets Halley's Comet Comet Hale-Bopp Shoemaker-Levy Comet
Asteroids and Meteors Stars and Galaxies
Comets Halley's Comet Comet Hale-Bopp Shoemaker-Levy Comet
Asteroids and Meteors Stars and Galaxies
Space Exploration
The Space Shuttle
The Voyager Mission
Astronomy History of Astronomy Famous Astronomers Hubble Space Telescope
Space A - Z Your Weight in Space
Astronomy History of Astronomy Famous Astronomers Hubble Space Telescope
Space A - Z Your Weight in Space
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Registered in England and Wales, company number 11922238
71-75 Shelton Street, Covent Garden, London, WC2H 9JQ