AST-123intermediate

Eclipses, Tides & the Earth–Moon Barycenter: Physical Mechanisms

The Earth–Moon system is governed by shared orbital motion and differential gravity. The same physics underlies eclipse prediction, coastal tide forecasting, spacecraft navigation, and precision reference frames.

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Eclipses, Tides & the Earth–Moon Barycenter: Physical Mechanisms

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AST-122Eclipses, Tides & the Earth–Moon Barycenter: Structures & Vocabulary→

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AST-124Eclipses, Tides & the Earth–Moon Barycenter: Observation, Measurement & Evidence→

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The Earth–Moon system is governed by shared orbital motion and differential gravity.

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An eclipse requires phase plus node alignment: at new moon the Moon can cast an umbral or penumbral shadow on Earth, while at full moon Earth can shadow the Moon.

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