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Definition of Retrograde motion
1. Noun. (astronomy) Motion of a body (either real or apparent) in a direction opposite to that of its normal motion, or to that of other similar or related bodies ¹
¹ Source: wiktionary.com
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1. Noun. (astronomy) Motion of a body (either real or apparent) in a direction opposite to that of its normal motion, or to that of other similar or related bodies ¹
¹ Source: wiktionary.com