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The PlanetsEpisodes

  1. Wednesday21:00
    BBC Four

    A Moment in the Sun - The Terrestrial PlanetsSeries 1

    1/5The four inner planets were born the same, yet have lived radically different lives. Why?(R)

  2. Thursday02:35
    BBC Four

    A Moment in the Sun - The Terrestrial PlanetsSeries 1

    1/5The four inner planets were born the same, yet have lived radically different lives. Why?(R)

  3. Wed 21 Oct 202621:00
    BBC Four

    The Two Sisters - Earth and MarsSeries 1

    2/5Brian Cox reveals how our solar system was once home to two blue planets.(R)

  4. Thu 22 Oct 202602:30
    BBC Four

    The Two Sisters - Earth and MarsSeries 1

    2/5Brian Cox reveals how our solar system was once home to two blue planets.(R)