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As the moon circles the Earth, the shape of the moon appears to change; this is because different amounts of the illuminated part of the moon are facing us. The shape varies from a full moon (when the Earth is between the sun and the moon) to a new moon (when the moon is between the sun and the Earth).

The star only appear to be staying with the moon. They are millions of times more distant than the moon. This movement plus the rotation of the earth is what gives us this affect called "Proper Motion".

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16y ago

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