And until 2006 there was one more planet in our solar system, but not anymore ... in Greenwich Park in East London to build his own scale model. This is based on the sun being the size of ...

Over millions of years, these objects grew larger, sweeping up material in their orbits and becoming the planets we know today. This model of solar system formation is known as the nebular hypothesis.

Save guides, add subjects and pick up where you left off with your BBC account. The Sun is about 100 times wider than the Earth and the Earth could fit into the Sun over one million times.

TRI-CITIES, Wash., - A new educational project is set to transform the trails along the Columbia River into a scale model of ...