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The four inner planets were born the same, yet have lived radically different lives. Why?

Brian Cox reveals how our solar system was once home to two blue planets.

Brian Cox continues his exploration of the solar system with a visit to a planet that dwarfs all the others: Jupiter.

Professor Brian Cox reveals the history of Saturn. Saturn began life as a strange planet of rock and ice and in time transformed into a gas giant, ring-less and similar looking to its rival, Jupiter.

Brian Cox continues the journey past Saturn to the Ice giants Uranus, Neptune, their moons and satellites while making a clear argument why Pluto is now considered to be an intriguing world but not a planet.