A long time ago, in a world lit only by fire, our relationship with the stars was far more personal. For thousands of generations, we watched the stars as if our lives depended on it. Because they did. We humans were not the biggest, the strongest, nor the fastest of all the animals we competed against. But we did have one thing going for us: our intelligence. One aspect of that was a genius for pattern recognition. Night after night, we watched the stars. And over time, our ancestors noticed that the motions of the stars across the nights of the year foretold changes on Earth that threatened or enhanced our chances for survival. In a time when our imaginations were the only stage where stories came to life, before there were movies or TVs or electronic devices of any kind, every human culture connected the dots to form their own pictures.