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By Jer-Nan Juang, Minh Q. Phan. "Jer-Nan Juang" (Ph.D., Virginia Polytechnic Institute and State University) is Principal Scientist in the Spacecraft Dynamics Branch, NASA Langley Research Center, and adjunct professor, George Washington University.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.