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Satellite
 
The Aqua satellite constellation consists of the Aqua, CloudSat, CALIPSO, PARASOL and Aura satellites

Several NASA satellites are shown in this illustration. Image Credit: NASA

      a natural moon or man-made object that orbits a planet or other object



Sentences:
NASA has put different kinds of satellites in orbit around Earth.

Our moon is a satellite to Earth.



More Information:
http://ksnn.larc.nasa.gov/webtext.cfm?unit=satellites   →
http://ksnn.larc.nasa.gov/webtext.cfm?unit=sat_use   →