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Remote Sensing
 
Drawing showing an airplane and satellite in the sky bouncing signals to Earth

Many satellites use remote sensing to study Earth. Image Credit: NASA

      studying an object without coming into direct contact with it



Sentences:
Satellites are an important remote sensing tool used by NASA.

People taking pictures from hot air balloons were the first to use remote sensing.



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