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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

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   →