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🇯🇵Japanese Source WordCode: JA

宇宙力学

Pronunciation / Transliteration: uchū riki-gaku

🇬🇧 Direct English Meaning:
Astrodynamics/ˌæs.troʊ.daɪˈnæm.ɪks/
nounCEFR C2 (Proficient)Top #28500 frequency
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🇯🇵 Example Sentence in Japanese:

"宇宙力学は人工衛星の軌道計算に不可欠である。"

Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    The branch of space research and engineering that deals with the motion of spacecraft, rockets, and natural celestial bodies under the influence of gravitational and propulsive forces.

    "Modern astrodynamics is crucial for calculating precise interplanetary trajectories and satellite station-keeping."
  2. 2

    The practical application of orbital mechanics and ballistics to space flight design and mission planning.

    "Her thesis focused on advanced astrodynamics to optimize low-Earth orbit constellations."
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Linguistic Origin & Historical Etymology

Coined in the mid-20th century, the term combines the combining form 'astro-', derived from the ancient Greek astron meaning 'star', with 'dynamics', derived from dynamikos meaning 'powerful' or relating to force (from dynamis, 'power'). It emerged with the advent of the space age to describe the specific application of classical mechanics and orbital mechanics to spacecraft and astronomical bodies.

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