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# Long description

This shows two diagrams of the Earth, Moon and Sun. The top version has the moon between the Earth and Sun, with the moon moving clockwise around the Earth. The tidal bulge is a blue ellipse around the Earth, width greater than height. This is a new moon. The lower image has the moon vertically above the Earth, and the Sun to the right of the Earth. This is the Moon in first quarter. The tidal bulge ellipse is now taller than wide.