How big are the planets and how far away are they compared to each other? See how the sizes of planets and the distances between them compare. And find out why it's so hard to create a scale model of ...

Have you ever wondered just how big space really is? It’s huge. In fact, it’s astronomical! The Colorado Scale Model Solar System depicts the Sun, the planets, and the distances between them all on ...

Welcome to the Solar System construction zone. Today you’ll be using our cosmic sandbox to build a brand new planet. What would you need to create a rocky planet like Earth? Where should this planet ...