Last Updated
：2025/11/25
retrograde motion
Noun
countable
uncountable
Japanese Meaning
天文学において、惑星やその他の天体が通常の運動方向に反して動く（実際または見かけ上の）現象、すなわち逆行運動
（ plural ）
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(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
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retrograde motion
Observers noted the planet's retrograde motion against the background stars, which puzzled early astronomers.
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Observers noted the planet's retrograde motion against the background stars, which puzzled early astronomers.
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