DALLASI absolutely love this, it's called an orrery, and it's a little mechanical model of our solar ... incredible planet in our solar system. A place that 6.8 billion people might find strangely ...

Need a new idea to keep kids entertained? Try stargazing. Free learning activities and videos about the solar system Free learning activities and videos about the solar system Free learning ...

Narrator: Serious scientists, like myself, believe our solar system was formed by the collapse of a giant cloud of gas and rock and is held together by the gravitational pull of the Sun.