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        Part of NASA
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        NASA | LIDAR 3D Mapping

        In this video adapted from NASA, learn how lasers can be used to map the surfaces of planets. Animations illustrate how LIDAR -- light detection and ranging -- uses reflected laser pulses to measure the distance between the instrument onboard a satellite and the surface of the planet. Find out how scientists compile distance measurements to build a 3-D model of the planet's terrain. In addition, learn about other applications of LIDAR to study Earth.

        This video is available in both English and Spanish audio with closed captions.

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