S1, E15, The Ice Book: Unlocking 800,000 Years of Earth's History

S1, E14, The Natural Books that Record the History of the Earth

S1, E13, The Weight of the Earth: Newton, Cavendish, and the Discovery of Gravitational Force

S1, E12, Why the Earth Cannot Be Weighed with a Scale

S1, E11, The Historical Methods of Measuring the Circumference of the Earth

S1, E10, How to Measure the Size of the Earth

S1, E9, The Hunters of Supernovae

S1, E8, The Amazing Gravity Slingshot

S1, E7, Voyager Spacecraft: Messengers of Earth to the Cosmos

S1, E6, The Discovery and Reclassification of Pluto in the Solar System

S1, E5, The Realities of Space Travel

S1, E4, The Boundaries of the Universe

S1, E3, The Cosmic Microwave Background: Remnants of the Big Bang

S1, E2, A 12-Month Tour of the 13.8 Billion Year History of the Universe

S1, E1, Imagining Creating a Small Universe Through a Big Bang

E5, The Nine Serpent Operation: Germany's Rocket and Missile Development in WWII

E2, Galen's Scalpel: The Diverging Paths of Eastern and Western Medicine

E1, Hippocratic Oath: The Origins and Influence of the Medical Profession's Ethical Code

E4, The Design Bureau in a Soviet Prison

E3, The Military's Support for Rocket Development in Germany and the Soviet Union

E2, The Delayed Apology: The History of Rocketry and the Legacy of Robert Goddard

E1, The Pioneers of Rocketry and Space Exploration