Protect our dark sky

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The presentation of a new ski jumping hill, Holmenkollen, in Oslo, ready for World Championship in 2011, reminds us of all of the light pollution that prevents even greater parts of the population from seeing a clear sky with all the stellar constellations generations before us have seen.

The presentation of a new ski jumping hill, Holmenkollen, in Oslo, ready for World Championship in 2011, reminds us of all of the light pollution that prevents even greater parts of the population from seeing a clear sky with all the stellar constellations generations before us have seen.