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Phases of the Moon

It takes the Moon 28 days to orbit around the Earth, during this time we see the Moon go through a series of different shapes, known as the "phases" of the Moon.

More information on the orbit of the Moon, and why we see these different phases can be found here.

On the animation above you can see the Earth and Moon as seen from above, to the left, where the light from the Sun is coming from the right. On the right panel you can see what the Moon would look like from the surface of the Earth, and a "calendar" showing the days go by. To go to a particular time, move the mouse pointer over the day you want to see.