Extras

    Video thumbnail: Ancient Skies Cannon Shot to the Moon

    Ancient Skies

    Cannon Shot to the Moon

    Hear Jules Verne's story of a cannon shot to the moon.

    Cannon Shot to the Moon

    Video thumbnail: Ancient Skies The Universe is Expanding

    Ancient Skies

    The Universe is Expanding

    Georges Lemaître proposes that the universe is expanding.

    The Universe is Expanding

    Video thumbnail: Ancient Skies Episode 3 Preview | Our Place in the Universe

    Ancient Skies

    Episode 3 Preview | Our Place in the Universe

    A cast of scientific pioneers reshape our solar system.

    Episode 3 Preview | Our Place in the Universe

    Video thumbnail: Ancient Skies Shattering the Spheres

    Ancient Skies

    Shattering the Spheres

    Astronomer Tycho Brahe overturns 1,500 years of scientific belief.

    Shattering the Spheres

    Video thumbnail: Ancient Skies The Marine Chronometer

    Ancient Skies

    The Marine Chronometer

    Take a closer look at John Harrison's Marine Chronometer.

    The Marine Chronometer