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National Dark Sky Week
National Dark-Sky Week is a week during which people all over the United States turn out their lights in order to observe the beauty of the night sky without light pollution. This event was started by Jennifer Barlow of Midlothian, Virginia in 2002, and its popularity and participation increases every year.
Information are taken from Wikipedia, the open encyclopedia, to which contribute many volunteers from around the whole world. Texts are available under the following conditions GNU Free Documentation License.
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