The sun is essential to life on Earth. Our weather and climate depend upon the sun. Green plants need sunlight to grow. Animals eat plants for food and we need plants and animals to live. Without the sun there would be no life on Earth.In over twenty dramatic， full-color photographs and a clear， informative text， Seymour Simon describes the sun， from the constant nuclear explosions at its core， to the sea of boiling gases that forms the surface， and the spectacular cloud of superheated gases that makes up the corona.You will also learn about huge storms called sunspots that erupt on the sun s surface， as well as gigantic prominences-geysers of flaming gas over a hundred thousand miles long that can rise and fall in just a few hours-and fiery explosions called flares that last only a few minutes yet can have the power of ten million hydrogen bombs.The Sun is a fascinating introduction to the center of our Solar System.