Graphic Organizer
            Comparison of comets and asteroids



             Comets                                   ...
Graphic Organizer
        Comparison of comets and asteroids (cont’d)



(Continued from previous page)



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Comets And Asteroids Comparison Graphic Organizer

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Comets And Asteroids Comparison Graphic Organizer

  1. 1. Graphic Organizer Comparison of comets and asteroids Comets Asteroids Comet Hyakutake Asteroid: Artist’s concept Made up of ice and dust Made up of rocks and metals Form tails when they pass through Do not form tails the inner solar system Typically have orbits that are very Typically have orbits that are much much more elliptical and tilted than more elliptical and tilted than those those of the planets of the planets Usually orbit the Sun in two regions: Usually orbit the Sun in the asteroid the Kuiper Belt (about 30 to 50 AU belt, a region between Mars and from the Sun) and the Oort Cloud Jupiter (extending outward to about 50,000 AU from the Sun) Typically remain in the outermost Typically remain in the asteroid belt, regions of the solar system (beyond a region between Mars and Jupiter the orbit of Neptune), but can pass through the inner solar system if their orbits are elliptical enough May or may not orbit the Sun in the Orbit the Sun in the same direction same direction as the planets as the planets (Table continued, next page) www.nasa.gov Page 1
  2. 2. Graphic Organizer Comparison of comets and asteroids (cont’d) (Continued from previous page) Comets Asteroids Usually undetectable to the Virtually undetectable to the naked eye; may become visible naked eye while passing through the inner solar system Meteor showers usually occur when Produce meteors (streaks of light) Earth passes through a stream of upon entering Earth’s atmosphere; particles left behind by a comet in produce meteorites if they survive its orbit. the trip through Earth’s atmosphere (either whole or in part) and hit the ground www.nasa.gov amazing-space.stsci.edu Page 2

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