Professor Brian Cox travels to the tallest mountain on Earth to show how something as basic as a planet's size can make the difference between life and death. Show more

Professor Brian Cox explores how the search for aliens in the solar system has followed the search for water. He looks at Jupiter's moon Europa - a dazzling ball of ice. Show more

Professor Brian Cox describes how the laws of nature have carved natural wonders across the solar system. He explores the powerhouse of them all, the sun. Show more

Professor Brian Cox describes how nature has carved out the solar system. He looks at the rings of Saturn, explaining how they formed from a chaotic cloud of gas. Show more

Professor Brian Cox reveals how something as flimsy as an envelope of gas - an atmosphere - can create some of the most wondrous sights in the solar system. Show more