Discovery Channel - Earth Collection (2012) Part 3 The Sun

Earth Collection

An amazing Earth DVD collection will let you in on the secrets of the moon, the sun and the Earth. And everything in between. Join scientists and explorers as they cover every facet of our planet and beyond. The Earth series DVDs are a two-disc set of fascinating landscapes, human and animal life and much more.

Part 3: The Sun

Nothing less than all life on earth gets its energy from the rays of the sun. Our very existence relies on the Sun's unique size, temperature, and location. Yet, with so much depending on it, you'd think we'd have a better understanding of this, our planet nearest star. The truth is that the Sun is still a mystery — one that has always driven, and continues to drive, scientific inquiry and ingenuity. Why, against logic, is the sun atmosphere hotter than its surface? Why does its magnetic field reverse every 11 years? Why do the thousands of violent eruptions on its surface virtually and suddenly stop like clockwork every 70 years? And what will happen to Earth in 5 billion years when the sun consumes all its fuel, and burns out? Narrated By Ed Hopkins

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