8. Asteroids: Deadly Impact @ nationalgeographic.com
   Have you checked your top-secret e-mail at the Department of Extraterrestrial Phenomena? The director needs you to nab the culprits menacing Mother Earth...
   http: //nationalgeographic.com/asteroids/
   
   
9. Asteroids: Zoom Astronomy
   Introduction to asteroids.
   http: //enchantedlearning.com/subjects/astronom...
   
   
10. Earth-crossing asteroids
    http: //eecs.wsu.edu/~hudson/Research/Asteroids...
    
    
11. NEAR-EARTH ASTEROID TRACKING
    Tracking of asteroids...
    http: //neat.jpl.nasa.gov/
    
    
12. Pictures and Images of Asteroids
    A selection of asteroid pictures,
    http: //classroomclipart.com/cgi-bin/kids/imageFoli...
    
    
13. Potentially Hazardous Asteroids
    Potentially Hazardous Asteroids (PHAs) are currently defined based on parameters that measure the asteroid's potential to make threatening close approaches to the Earth...
    http: //neo.jpl.nasa.gov/neo/pha.html
    
    
14. Sky and Telescope's Asteroids Page
    We now realize that these small, rocky bodies hold important clues to the nature of our planetary system and its earliest history...
    http: //skypub.com/sights/asteroids/asteroids.s...
    
    

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