nine planets, dozens of moons, and thousands of asteroids, meteoroids, and comets that travel around our sun./PPFirst, Simon explores the star at the center of our Solar System -- from the constant nuclear explosions at its core to the giant storms on its surface as geysers of flaming gas over a hundred thousand miles long rise and fall in just a few hours./PPYou will also learn about the four rocky inner planets, from airless Mercury to fiery Venus, her sister planet, Earth, and mysterious Mars. Then join the thrilling iVoyager/i missions to explore the four gaseous outer planets: gigantic Jupiter, ringed Saturn, tilted Uranus -- the planet lying on its side -- and windy Neptune. You will finish your journey at distant Pluto, then visit the asteroid belt and examine comets, the dirty snowballs in space./PPA companion volume to Simon's landmark series of individual books about each of the planets, the sun, stars, and other space sights, iOur Solar System/i will introduce you to some of the most amazing mysteries in the universe./P  (less)