Episode two of this landmark series delves further into our ancient understanding of the skies above. After exploring the mysterious creatures living at the edge of the world, we follow the story of our earth as it takes shape and a place in the cosmos in the minds of great astronomers and scientists including Ptolemy, Copernicus, and Galileo. From flat Earth legends to Galileo's telescope, track major changes in scientific understanding. Ideas rise and fall as we continue to explore our ancient skies.