What do the Northern Lights Reveal? | The Planets | BBC Earth

The solar winds scatter electrically charged particles that would hit and ravage the Earth were it not for its magnetic field. This is what the Northern Lights reveal and one of the reasons why life is able to exist on our planet. Featuring, Brian Cox. Subscribe: http://bit.ly/BBCEarthSub

Watch more:
Planet Earth http://bit.ly/PlanetEarthPlaylist
Blue Planet http://bit.ly/BluePlanetPlaylist
Planet Earth II http://bit.ly/PlanetEarthIIPlaylist
Planet Dinosaur http://bit.ly/PlanetDinoPlaylist

The Planets
This stunningly ambitious series brings to life the most memorable events in the history of the solar system, by using groundbreaking visual effects to tell the thrilling story of all eight planets. Transporting you to the surface of these dynamic worlds to witness the moments of high drama that shaped each one, The Planets reveals how the latest science allows us to unlock their past lives. It pieces together clues of magnificent lost waterfalls on Mars, the mass planetary migrations as they jostled for position early in their history, and even the distant fate of Saturn as one of its moons awakens to form a beautiful water world. Also available: The Planets: Behind the Science

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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