Let me ask you, when you look at the stars on a cold, clear night, what do you see? Diamonds sparkling? Shapes? I do see those things, but I also see so much more. When I look at the stars, I see a thousand generations of humans looking up in wonder, writing shapes in the dirt and telling incredible stories of brave heroes, ferocious beasts, and important lessons.  I see our common ancestors using the sky to predict the weather, the seasons, and even the coming of the end of the world.  They were looking at a comet in the...