This picture is kind of mind-boggling at first, and it takes a minute or so to understand what it is. This is a 24 hour "mosaic" of a spot in Sounio, Greece. The transition from night to day and from day to night is shown. As is the sun's movement, which is taken in 15 minute intervals. My favorite part of the picture though, is the star trails. It shows during the night that as the stars get closer to the top of the picture, more circumpolar, their startrails last longer. On the website, it says that the stars closer towards the bottom have about 30 minute startrails, meaning they do not stay in the night sky very long. However, as we move upward, the startrails become more circular as they rotate around the poles, and it is said that they have 11 hour startrails. For example, Polaris, which is right above our North Pole, is one of the stars closer to the top with 11 hour startrails. I really liked this picture because it was beautiful, but also because it is such a good visual aid in showing the difference in the location of a star, and how long they stay in our night sky, and where they move.
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