The Shape of a Crescent Moon

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Crescent Moon

When you see a crescent moon, it does not mean that the moon has changed shape in any way. You are only able to see the portion of the moon that the sun is currently shining on. The earth is between the sun and the moon, and this is what causes a shadow to be cast on the moon. Depending on where the sun and the earth are in reference to the moon, you will be able to see either a crescent or a full moon. You can see a full moon when the sun is able to shine on the entire surface of the moon that we can see. Some nights, you may find that you are unable to see the moon at all.