Blast off and explore the star of our solar system--the Sun! Billions of stars fill the universe. But for humans, the most important star is the one closest to Earth--the Sun. From vitamin D to solar energy, the Sun provides the power necessary to sustain life on our planet. And as the center of our solar system, the strong gravitational pull from this ball of burning gas keeps all the planets in orbit. Discover the significance of the Sun and its brilliant blaze in this fascinating book!