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celestial mechanics

noun plural but singular or plural in construction
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Definition of celestial mechanics

: the application of the methods of analytic mechanics to the determination of the motions of the celestial bodies under the action of gravitation

— called also gravitational astronomy

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“Celestial mechanics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/celestial%20mechanics. Accessed 22 Oct. 2021.

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