What's in our Solar System?
Orbiting the Sun are eight major planets - with their moons and rings - and countless smaller bodies: dwarf planets, asteroids and comets. Together, they make up our Solar System.
Our Solar System is basically one star (the Sun) and a tiny amount of debris, less than 0.2 % of the total mass, left over from the Sun’s birth. Four small, rocky worlds, including our home planet the Earth, orbit the Sun within 250 million kilometres. Four larger planets – the gas giants – are spread out over distances between 750 and 4500 million kilometres. Rocky asteroids orbit between Mars and Jupiter, icy mini-worlds can be found beyond Neptune, and smaller comets traverse the system on highly elongated paths.
You probably know the eight planets by heart: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. But do you know about the other objects in the Solar System?