関連ワード:
why does only part of the moon light up why does only some of the moon light up why does only half of the moon light up why is only half of the moon lit up why is only some of the moon lit up why does only one side of the moon light up why is only one part of the moon lit up why are only certain parts of the moon lit up at different times why is only the bottom half of the moon lit up what causes part of the moon to be lit up
