Extras

Video thumbnail: Ancient Skies Galileo's Discoveries

Ancient Skies

Galileo's Discoveries

Take an in depth look at the celestial bodies discovered by Galileo.

Galileo's Discoveries

Video thumbnail: Ancient Skies Earth-Centered Cosmos

Ancient Skies

Earth-Centered Cosmos

Explore Ptolemy's earth-centered model of the cosmos.

Earth-Centered Cosmos

Video thumbnail: Ancient Skies Episode 2 Preview | Finding the Center

Ancient Skies

Episode 2 Preview | Finding the Center

Episode two charts our efforts to give the earth shape and place in the cosmos.

Episode 2 Preview | Finding the Center

Video thumbnail: Ancient Skies The Edge of the World

Ancient Skies

The Edge of the World

Explore the Greek myth of Odysseus.

The Edge of the World