5/5 In the last episode, Professor Brian Cox explores the remotest part of the solar system.
4/5 Professor Brian Cox reveals the history of Saturn.
3/5 Brian Cox explores a planet that dwarfs all the others: Jupiter.
2/5 Brian Cox reveals how our solar system was once home to two blue planets.
1/5 The four inner planets were born the same, yet have lived radically different lives. Why?