DALLASI absolutely love this, it's called an orrery, and it's a little mechanical model of our solar system. You can see the planets here, orbiting the sun as they would do in real life.

The order of the planets in the solar system, starting nearest the sun and working outward ... and becoming the planets we know today. This model of solar system formation is known as the nebular ...

Save guides, add subjects and pick up where you left off with your BBC account. The Solar System is the name given to the part of space that surrounds the Sun. Even though it is bigger than ...