From the mission that saw Pluto for the first time to the Mars rovers, a new breed of explorers risk their careers, and even their lives, to lead humanity to worlds we have never seen and tackle the mysteries of life itself.
Episode Discussion
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Retitled, this episode re-aired on 6/2/2021 as "The New Explorers" without changes except for the title. It highlights missions to explore Pluto (New Horizons), the Hubble Telescope (repair), asteroid Bennu (OSIRIS-REx), Mars (Curiosity), and Saturn (Cassini).
Retitled, this episode re-aired on 10/13/2018 at 1600 as "The Universe: The Secret History" with a summary of "The latest discoveries have shed new light on our universe's greatest mysteries, helping experts investigate the secrets of how it was formed, how life began, and what will happen to Earth."