Host Phil Plait explains the nature and origins of the field of astronomy. Learn how ancient humans observed the sky and associated the patterns they found there with farming and the seasons on Earth. Early astronomers developed an understanding of our place in the Milky Way using math and science. Explore where our world exists within the universe, the origins of the field of astronomy, famous astronomers, and advancements made to the science that have widened our view and our knowledge of the universe. [12:11]