Asteroids/Comets Resources Asteroids: Comets (dirty snowballs) are primarily composed of ice and dust. As they near the sun, the heat melts the comet's ices and releases the dust particles we view as the comet's tail. Asteroids (minor planets) are large rocks ranging in size from a few feet to several hundred miles across. Ready to learn more? Near Earth Asteroid Rendezvous

http://ww incinerate in a streak of light known as a meteor. If the meteoroid does not burn up completely, what's left strikes Earth's surface and is called a meteorite." comets information With this interactive book, learn all about comets Asteroid Introduction: Asteroids that are on a collision course with Earth are called meteoroids. When a meteoroid strikes our atmosphere at high velocity, friction causes this chunk of space matter to Find the "comet words" interactive gameactive

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