We explore the earliest origins of our relationship with the skies, from our earliest ancestors, to the birth of science.

Episode Two charts efforts to give the earth a shape and a place. From flat earth legends to Galileo’s telescope, this episode tracks major changes in our scientific understanding.

In this episode, we complete the puzzle of our ancient skies. A cast of scientific pioneers reshape our solar system. We develop new technology to explore its furthest reaches and wonder whether we’re alone.