Geodesy is a field of study that deals with the measurement and representation of the Earth, and it all started when a clever human named Eratosthenes discovered that you could measure the circumference of the Earth by looking down a well. Over time, the field of geodesy has expanded and evolved dramatically, and NASA uses technology like radio telescopes, ground surveys, and satellites to contribute! Learn more about geodesy in this video!
Chris Smith (HTSI): Lead Animator Chris Smith (HTSI): Video Editor Steven J. Wall (MUNIZ): Narrator Chris Smith (HTSI): Producer Herbert Frey (NASA/GSFC): Scientist Frank Lemoine (NASA/GSFC): Scientist Stephen Merkowitz (NASA/GSFC): Scientist Chris Smith (HTSI): Writer
Please give credit for this item to: NASA/Goddard Space Flight Center
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