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Asteroid
 
This picture of a rocky asteroid is a combination of high-resolution color information from a NASA spacecraft

This picture of the rocky asteroid 951 Gaspra was taken by NASA's Galileo spacecraft. Image Credit: NASA

      a rocky object in space that can be a few feet wide to several hundred miles wide. Most asteroids in the solar system orbit in a belt between Mars and Jupiter.



Sentences:
NASA's Dawn spacecraft studies asteroids.

Thousands of asteroids are in orbit around the sun.



More Information:
http://spaceplace.nasa.gov/en/kids/ds1_ast.shtml   →
http://starchild.gsfc.nasa.gov/docs/StarChild/solar_system_level1/asteroids.html   →
http://sse.jpl.nasa.gov/planets/profile.cfm?Object=Asteroids&Display=Kids   →