Bobby and I watched an amazing video that came out recently on a couple of guys who built a model Solar System in the Nevada desert. They were able to go one further than we did, since they constructed the model not only scaled to distance but also to size. As an example, if the Earth were a marble, the Sun would be one-and-a-half yards across... So far so good, but we would then have to place Neptune about seven miles from the Sun for the scale to hold!! On our scale (the corridor at the Batt school, the inner planets are no bigger than specks of dust). We then continued adding to our Solar System by placing the asteroid belt between Mars and Jupiter. And as always, we concluded class by browsing through the Astronomy Picture of the Day archives for images of nebulae that Bobby can print out and tape to his wall.