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Date : 2001-09-15
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Overview Asteroids Comets Meteors – NASA Solar System ~ Asteroids and comets—and the meteors that sometimes come from them—are leftovers from the formation of our solar system 46 billion years ago While the planets and moons have changed over the millennia many of these small chunks of ice rock and metal have not They are a lot like a fossil record of planetary evolution There are currently known asteroids and known comets More ›
Whats the Difference Between Asteroids Comets and Meteors ~ Meteoroids Meteors Meteorites Meteoroids are tiny asteroids or the brokenoff crumbs of comets and sometimes planets They range in size from a grain of sand to boulders 3 feet 1 meter wide
Asteroid or Meteor Whats the Difference NASA Space ~ A meteor is what happens when a meteoroid – a small piece of an asteroid or comet – burns up upon entering Earth’s atmosphere creating a streak of light in the sky An asteroid is a small rocky object that orbits the Sun
Comets Meteors and Asteroid Facts for Kids ~ Fun Facts about Comets Meteors and Asteroids for Kids Comets are mostly made of ice They are very old As comets travel close to the Sun some of the ice melts off and becomes a gas This melting process causes bits of dust and debris to trail behind the comet This tail can be seen in the night sky as a bright quicklymoving light
What are Asteroids Comets Meteors Sky Telescope ~ While asteroids are rocky comets are made of ice dust and small amounts of volatile compounds such as ammonia methane and carbon dioxide Comet 46PWirtanen glows vaguely near the Pleiades
In Depth Comets – NASA Solar System Exploration ~ Asteroids Comets Meteors In Depth Overview In the distant past people were both awed and alarmed by comets perceiving them as longhaired stars that appeared in the sky unannounced and unpredictably Chinese astronomers kept extensive records for centuries including illustrations of characteristic types of comet tails times of cometary
Asteroids meteoroids meteors meteorites comets ~ Mostly debris of comets sometimes debris of asteroids Meteor A bright tail of light caused by a meteoroid during its atmospheric flight also called a shooting star or falling star
Astronomy for Kids Comets and Meteors ~ What are meteoroids meteors and meteorites A meteoroid is a small piece of rock or metal that has broken off from a comet or an asteroid Meteoroids can form from asteroids colliding or as debris from comets speeding by the Sun Meteors are meteoroids that get pulled into Earths atmosphere by Earths gravity
Infographic Whats the Difference Between a Comet ~ Comets are much like asteroids but might have a more ice methane ammonia and other compounds that develop a fuzzy cloudlike shell called a coma – as well as a tail — when it gets closer
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