In his first series for BBC One, Professor Brian Cox will take viewers on a grand tour of planet Earth to explain what lies behind its startling beauty. After journeying around the Solar System and out to the edges of the universe, Brian will bring viewers back to Earth to unveil the forces that make our planet what it is. In this four-part series, Forces Of Nature, Brian will reveal why Earth is the most colourful world we know and explain how the white light of the sun sears through the darkness of space until it hits Earth’s atmosphere where it begins a new journey, splitting into a rainbow of colours. Brian will reveal rainbows with a difference, magical moonbows that appear in a few precious places at particular times of year, rainbows drawn in the night sky from the light reflected by the full moon.