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A Chinese city plans to launch an 'artificial moon' into orbit by 2020, designed to reflect sunlight and illuminate the night sky over Chengdu. This ambitious project, led by the Harbin Institute of Technology, aims to supplement the city's streetlights, potentially saving vast amounts of electricity. The satellite would carry mirrors adjustable to illuminate areas within a 10 to 50-kilometer radius.
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Why It’s Fascinating
The concept of using orbital mirrors to illuminate the Earth's surface isn't new, but the scale and specificity of the Chengdu project are remarkable. While the initial 2020 launch date has passed without widespread public confirmation of the satellite's deployment, the underlying research continues. If realized, this technology could drastically alter urban nighttime environments, offering a potentially sustainable alternative to traditional electric lighting. However, significant questions remain regarding light pollution, ecological impacts on nocturnal wildlife, and the precise control needed to avoid unintended consequences. Could this technology eventually be used for disaster relief, providing temporary illumination to affected areas, or does it pose a new form of environmental disruption?
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