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7 Cards in this Set

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  • Back
sidereal period
the period of rotation or revolution of an astronomical body relative to the stars
synodic period
the period of rotation or revolution of a celestial body with respect to the sun
lunar eclipse
the darkening of the moon when it moves through Earth's shadow
umbra
the region of a shadow that is totally shaded
penumbra
the portion of a shadow that is only partially shaded
total solar eclipse
the moon completely covers the bright surface of the sun
total lunar eclipse
the moon completely enters Earth's dark shadow