2. Dark Worlds

Professor Brian Cox explores the solar system's hidden realms, between and beyond the planets, where countless worlds lie hiding in the darkness.

3. Storm Worlds

Professor Brian Cox explores the solar system's wildest weather, encountering powerful lightning, strange metallic frosts and monsoon rains on a moon a billion kilometres from Earth.

4. Ice Worlds

Professor Brian Cox explores the solar system's ice giants, frozen moons and worlds where ice behaves in unimaginable ways.

5. Strange Worlds

Professor Brian Cox explores the solar system's misfits and oddballs and investigates the forces that sculpted the bizarre features on these strange worlds.